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Multiply botton row by -2 2x-3y= 13 -2x-4y=8 X' cancel -7y=21 Divide by -7 Y= -3 2x-3(-3)=13 2x+9=13 -9. -9 2x= 4 X= 2
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Multiply botton row by -2 2x-3y= 13 -2x-4y=8 X' cancel -7y=21 Divide by -7 Y= -3 2x-3(-3)=13 2x+9=13 -9. -9 2x= 4 X= 2