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<div align="center"><br /> <table style="color: #003300; border: 4px solid #003300; float: none; text-align: left; vertical-align: top; width: 396px; height: 130px; background-image: none; background-color: #ffffcc;" border="4" frame="void" rules="none"> <tbody> <tr align="center"> <td style="background-color: #003300; background-image: none; color: #ffcc00; border-color: #000066; text-align: center; vertical-align: top; border-style: none;" valign="top" width="NaNpx"><span style="font-size: large; color: #ffff99;" data-mce-mark="1">Igualació</span><strong><br /></strong></td> </tr> <tr> <td valign="top" width="NaNpx"> <p><strong><span style="font-size: small; color: #003300;" data-mce-mark="1">Si les eq<span class="nolink" data-mce-mark="1">uacio</span>ns són del tipus: «math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mstyle mathsize=¨14px¨»«mfenced mathcolor=¨#003300¨ open=¨{¨ close=¨}¨»«mtable»«mtr»«mtd»«mi mathvariant=¨bold¨»y«/mi»«mo mathvariant=¨bold¨»=«/mo»«mn mathvariant=¨bold¨»5«/mn»«mi mathvariant=¨bold¨»x«/mi»«mo mathvariant=¨bold¨»-«/mo»«mn mathvariant=¨bold¨»4«/mn»«/mtd»«/mtr»«mtr»«mtd»«mi mathvariant=¨bold¨»y«/mi»«mo mathvariant=¨bold¨»=«/mo»«mn mathvariant=¨bold¨»2«/mn»«mi mathvariant=¨bold¨»x«/mi»«mo mathvariant=¨bold¨»+«/mo»«mn mathvariant=¨bold¨»5«/mn»«/mtd»«/mtr»«/mtable»«/mfenced»«/mstyle»«/math»</span><br /><br /><span style="font-size: small; color: #003300;" data-mce-mark="1">Igualem: 5x - 4 = 2x + 5 i resolem: x = 3.</span><br /><span style="font-size: small; color: #003300;" data-mce-mark="1">Si substituïm x per 3 en qualsevol de les dues, y = 11.</span><br /></strong></p> <p><span style="color: #003300;"><strong><span style="font-size: small;">Solució: (3,11) </span></strong></span></p> </td> </tr> </tbody> </table> </div>
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