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mrsladychi29
Feb 3, 2018, 9:03:50 AM
6
Substitution how do u do it??
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Kubesh678
Feb 3, 2018, 3:05:58 PM
3x-(2x+7) = -9 <=> x -7 = -9 <=> x = -2; y = 2(-2) + 7 = 3.
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