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5/7-((5/7)*x) = (-5/6)*x+235/294 // - (-5/6)*x+235/294
5/7-((5/7)*x)-((-5/6)*x)-(235/294) = 0
(-5/7)*x+(5/6)*x+5/7-235/294 = 0
5/42*x-25/294 = 0 // + 25/294
5/42*x = 25/294 // : 5/42
x = 25/294/5/42
x = 5/7
x = 5/7
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