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(-5/2)*x+10 = (4/7)*x-4 // - (4/7)*x-4
(-5/2)*x-((4/7)*x)+4+10 = 0
(-5/2)*x+(-4/7)*x+4+10 = 0
14-43/14*x = 0 // - 14
-43/14*x = -14 // : -43/14
x = -14/(-43/14)
x = 196/43
x = 196/43
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