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OpenStudy (anonymous):
2) x + y - 7 = 0>>>>>>>x=-y+7 .........._(3) substitute (3) in (1): 5(-y+7)-3y=10 -5y+35-3y=10 -8y=-25 y=25/8 >>>> (4) substitute (4) in (3): x=(-25/8)+7=31/8 so,the answer is :{(31/8, 25/8)
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