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(2/3)*x-(3/4) = (-1/2)*x+5 // - (-1/2)*x+5
(2/3)*x-((-1/2)*x)-(3/4)-5 = 0
(2/3)*x+(1/2)*x-3/4-5 = 0
7/6*x-23/4 = 0 // + 23/4
7/6*x = 23/4 // : 7/6
x = 23/4/7/6
x = 69/14
x = 69/14
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