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Multiply the 1st equation by 2 and the 2nd by 5 to get: 10x-6y= -18 10x-25y=20 subtract equation 2 from equation 1 and the x's cancel: 10x-6y= -18 10x-25y=20 19y= -38 y= -2 substitute y= -2 into either of the original equations to get x= -3 (-3, -2)
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