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(9/4)*x-(5/6) = (-13/12)*x // - (-13/12)*x
(9/4)*x-((-13/12)*x)-(5/6) = 0
(9/4)*x+(13/12)*x-5/6 = 0
10/3*x-5/6 = 0 // + 5/6
10/3*x = 5/6 // : 10/3
x = 5/6/10/3
x = 1/4
x = 1/4
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