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How do you use the elimination method for 7x-3y=24 3x-7y=-16

How do you use the elimination method for 7x-3y=24 3x-7y=-16
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How do you use the elimination method for 7x-3y=24
3x-7y=-16

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User Grey Panther
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1 Answer

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\left \{ {7x-3y=24\ \atop 3x-7y=-16\ } \right. \\\\ \left \{ {{-21x+9y=-72} \atop {21x-49y=-112}} \right. \\+-------\\\\-40y=-184\ \ \ \ |:-40\\x=4.6\\\\3\cdot4.6-7y=-16\\13.8-7y=-16\\-7y=-16-13.8\\-7y=-29.8\ \ \ \ \ |:-7\\y=4.257
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User Benjamin Thiel
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