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(3/4)*x+1/7 = (-1/4)*x-(5/7) // - (-1/4)*x-(5/7)
(3/4)*x-((-1/4)*x)+1/7+5/7 = 0
(3/4)*x+(1/4)*x+1/7+5/7 = 0
x+6/7 = 0 // - 6/7
x = -6/7
x = -6/7
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