&lt;p class=&quot;MsoNormal&quot; style=&quot;line-height:normal&quot;&gt;&lt;b&gt;&lt;i&gt;&lt;u&gt;&lt;span style=&quot;font-size:
14.0pt;font-family:&amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;;mso-ascii-theme-font:major-bidi;
mso-hansi-theme-font:major-bidi;mso-bidi-theme-font:major-bidi;color:#E36C0A;
mso-themecolor:accent6;mso-themeshade:191&quot;&gt;Exemple 2&amp;nbsp;:&lt;/span&gt;&lt;/u&gt;&lt;/i&gt;&lt;/b&gt;&lt;/p&gt;&lt;p class=&quot;MsoListParagraph&quot; style=&quot;text-indent:-18.0pt;line-height:normal;
mso-list:l0 level1 lfo1&quot;&gt;&lt;!--[if !supportLists]--&gt;&lt;b&gt;&lt;i&gt;&lt;span style=&quot;font-size:
18.0pt;font-family:&amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;;mso-ascii-theme-font:major-bidi;
mso-fareast-font-family:&amp;quot;Times New Roman&amp;quot;;mso-fareast-theme-font:major-bidi;
mso-hansi-theme-font:major-bidi;mso-bidi-theme-font:major-bidi;color:#FF0066&quot;&gt;1.&lt;span style=&quot;font-style: normal; font-variant-numeric: normal; font-variant-east-asian: normal; font-weight: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: &amp;quot;Times New Roman&amp;quot;;&quot;&gt;&amp;nbsp;&amp;nbsp;
&lt;/span&gt;&lt;/span&gt;&lt;/i&gt;&lt;/b&gt;&lt;b&gt;&lt;i&gt;&lt;u&gt;&lt;span style=&quot;font-size:18.0pt;font-family:&amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;;mso-ascii-theme-font:
major-bidi;mso-hansi-theme-font:major-bidi;mso-bidi-theme-font:major-bidi;
color:#FF0066&quot;&gt;III. R&eacute;soudre un probl&egrave;me &agrave; l&rsquo;aide d&rsquo;une &eacute;quation&amp;nbsp;:&lt;o:p&gt;&lt;/o:p&gt;&lt;/span&gt;&lt;/u&gt;&lt;/i&gt;&lt;/b&gt;&lt;/p&gt;&lt;p class=&quot;MsoNormal&quot; style=&quot;line-height:normal&quot;&gt;

&lt;b&gt;&lt;i&gt;&lt;u&gt;&lt;span style=&quot;font-size:16.0pt;line-height:115%;font-family:&amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;;
mso-ascii-theme-font:major-bidi;mso-fareast-font-family:Calibri;mso-fareast-theme-font:
minor-latin;mso-hansi-theme-font:major-bidi;mso-bidi-theme-font:major-bidi;
color:#00B050;mso-ansi-language:FR;mso-fareast-language:EN-US;mso-bidi-language:
AR-SA&quot;&gt;Enonc&eacute;&amp;nbsp;&amp;nbsp;&lt;/span&gt;&lt;/u&gt;&lt;/i&gt;&lt;/b&gt;&lt;/p&gt;&lt;p class=&quot;MsoNormal&quot; style=&quot;margin-left:18.0pt;line-height:normal;tab-stops:105.95pt&quot;&gt;&lt;b&gt;&lt;i&gt;&lt;u&gt;&lt;span style=&quot;font-size:16.0pt;font-family:&amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;;mso-ascii-theme-font:
major-bidi;mso-hansi-theme-font:major-bidi;mso-bidi-theme-font:major-bidi;
color:#00B050&quot;&gt;M&eacute;thode :&lt;/span&gt;&lt;/u&gt;&lt;/i&gt;&lt;/b&gt;&lt;/p&gt;&lt;p class=&quot;MsoNormal&quot; style=&quot;margin-left:18.0pt;line-height:normal;tab-stops:105.95pt&quot;&gt;&lt;b&gt;&lt;i&gt;&lt;u&gt;&lt;span style=&quot;font-size:16.0pt;font-family:&amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;;mso-ascii-theme-font:
major-bidi;mso-hansi-theme-font:major-bidi;mso-bidi-theme-font:major-bidi;
color:#00B050&quot;&gt;&lt;o:p&gt;&lt;/o:p&gt;&lt;/span&gt;&lt;/u&gt;&lt;/i&gt;&lt;/b&gt;&lt;/p&gt;&lt;p class=&quot;MsoListParagraph&quot; style=&quot;text-indent:-18.0pt;line-height:normal;
mso-list:l0 level1 lfo1;tab-stops:105.95pt&quot;&gt;&lt;!--[if !supportLists]--&gt;&lt;span style=&quot;font-size:14.0pt;font-family:&amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;;mso-ascii-theme-font:
major-bidi;mso-fareast-font-family:&amp;quot;Times New Roman&amp;quot;;mso-fareast-theme-font:
major-bidi;mso-hansi-theme-font:major-bidi;mso-bidi-theme-font:major-bidi;
color:#002060&quot;&gt;1.&lt;span style=&quot;font-variant-numeric: normal; font-variant-east-asian: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: &amp;quot;Times New Roman&amp;quot;;&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;
&lt;/span&gt;&lt;/span&gt;&lt;!--[endif]--&gt;&lt;span dir=&quot;LTR&quot;&gt;&lt;/span&gt;&lt;span style=&quot;font-size:
14.0pt;font-family:&amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;;mso-ascii-theme-font:major-bidi;
mso-hansi-theme-font:major-bidi;mso-bidi-theme-font:major-bidi;color:#002060&quot;&gt;Choix
de l&rsquo;inconnue&amp;nbsp;:&lt;/span&gt;&lt;/p&gt;&lt;p class=&quot;MsoListParagraph&quot; style=&quot;text-indent:-18.0pt;line-height:normal;
mso-list:l0 level1 lfo1;tab-stops:105.95pt&quot;&gt;&lt;span dir=&quot;LTR&quot; style=&quot;text-indent: -18pt;&quot;&gt;&lt;/span&gt;&lt;span style=&quot;text-indent: -18pt; font-size: 14pt; font-family: &amp;quot;Times New Roman&amp;quot;, serif; color: rgb(0, 32, 96);&quot;&gt;Mise
en &eacute;quation&amp;nbsp;:&lt;/span&gt;&lt;/p&gt;&lt;p class=&quot;MsoListParagraph&quot; style=&quot;text-indent:-18.0pt;line-height:normal;
mso-list:l0 level1 lfo1;tab-stops:105.95pt&quot;&gt;&lt;span style=&quot;font-size:14.0pt;line-height:115%;
font-family:&amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;;mso-ascii-theme-font:major-bidi;
mso-fareast-font-family:Calibri;mso-fareast-theme-font:minor-latin;mso-hansi-theme-font:
major-bidi;mso-bidi-theme-font:major-bidi;color:#002060;mso-ansi-language:FR;
mso-fareast-language:EN-US;mso-bidi-language:AR-SA&quot;&gt;R&eacute;solution de l&rsquo;&eacute;quation&amp;nbsp;:&lt;/span&gt;&lt;/p&gt;&lt;p class=&quot;MsoListParagraph&quot; style=&quot;text-indent:-18.0pt;line-height:normal;
mso-list:l0 level1 lfo1;tab-stops:105.95pt&quot;&gt;&lt;span style=&quot;font-size:14.0pt;line-height:115%;
font-family:&amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;;mso-ascii-theme-font:major-bidi;
mso-fareast-font-family:Calibri;mso-fareast-theme-font:minor-latin;mso-hansi-theme-font:
major-bidi;mso-bidi-theme-font:major-bidi;color:#002060;mso-ansi-language:FR;
mso-fareast-language:EN-US;mso-bidi-language:AR-SA&quot;&gt;&lt;/span&gt;&lt;/p&gt;&lt;p class=&quot;MsoListParagraph&quot; align=&quot;center&quot; style=&quot;text-align:center;text-indent:
-18.0pt;line-height:normal;mso-list:l0 level1 lfo1;tab-stops:105.95pt&quot;&gt;&lt;span style=&quot;font-size:14.0pt;font-family:&amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;;mso-ascii-theme-font:
major-bidi;mso-fareast-font-family:&amp;quot;Times New Roman&amp;quot;;mso-fareast-theme-font:
major-bidi;mso-hansi-theme-font:major-bidi;mso-bidi-theme-font:major-bidi;
color:#002060&quot;&gt;&lt;span style=&quot;font-variant-numeric: normal; font-variant-east-asian: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: &amp;quot;Times New Roman&amp;quot;;&quot;&gt;&amp;nbsp; &amp;nbsp; &amp;nbsp;&lt;/span&gt;&lt;/span&gt;&lt;!--[endif]--&gt;&lt;span dir=&quot;LTR&quot;&gt;&lt;/span&gt;&lt;span style=&quot;font-size:
14.0pt;font-family:&amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;;mso-ascii-theme-font:major-bidi;
mso-hansi-theme-font:major-bidi;mso-bidi-theme-font:major-bidi;color:#002060&quot;&gt;V&eacute;rification
et retour &agrave; la situation&amp;nbsp;:&lt;o:p&gt;&lt;/o:p&gt;&lt;/span&gt;&lt;/p&gt;&lt;p class=&quot;MsoListParagraph&quot; style=&quot;text-indent:-18.0pt;line-height:normal;
mso-list:l0 level1 lfo1;tab-stops:105.95pt&quot;&gt;&lt;span style=&quot;font-size:14.0pt;line-height:115%;
font-family:&amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;;mso-ascii-theme-font:major-bidi;
mso-fareast-font-family:Calibri;mso-fareast-theme-font:minor-latin;mso-hansi-theme-font:
major-bidi;mso-bidi-theme-font:major-bidi;color:#002060;mso-ansi-language:FR;
mso-fareast-language:EN-US;mso-bidi-language:AR-SA&quot;&gt;&lt;br&gt;&lt;/span&gt;&lt;span style=&quot;text-indent: -18pt; font-size: 14pt; font-family: &amp;quot;Times New Roman&amp;quot;, serif; color: rgb(0, 32, 96);&quot;&gt;&lt;br&gt;&lt;/span&gt;&lt;/p&gt;&lt;p class=&quot;MsoListParagraph&quot; style=&quot;text-indent:-18.0pt;line-height:normal;
mso-list:l0 level1 lfo1;tab-stops:105.95pt&quot;&gt;&lt;span style=&quot;text-indent: -18pt; font-size: 14pt; font-family: &amp;quot;Times New Roman&amp;quot;, serif; color: rgb(0, 32, 96);&quot;&gt;&lt;br&gt;&lt;/span&gt;&lt;/p&gt;&lt;p class=&quot;MsoListParagraph&quot; style=&quot;text-indent:-18.0pt;line-height:normal;
mso-list:l0 level1 lfo1;tab-stops:105.95pt&quot;&gt;&lt;span style=&quot;font-size:
14.0pt;font-family:&amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;;mso-ascii-theme-font:major-bidi;
mso-hansi-theme-font:major-bidi;mso-bidi-theme-font:major-bidi;color:#002060&quot;&gt;&lt;o:p&gt;&lt;/o:p&gt;&lt;/span&gt;&lt;/p&gt;&lt;p class=&quot;MsoListParagraph&quot; style=&quot;text-indent:-18.0pt;line-height:normal;
mso-list:l0 level1 lfo1;tab-stops:105.95pt&quot;&gt;&lt;span style=&quot;font-size:
14.0pt;font-family:&amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;;mso-ascii-theme-font:major-bidi;
mso-hansi-theme-font:major-bidi;mso-bidi-theme-font:major-bidi;color:#002060&quot;&gt;&lt;o:p&gt;&lt;/o:p&gt;&lt;/span&gt;&lt;/p&gt;