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5*x-(1/4) = 2*x-7/(-1) // - 2*x-7/(-1)
5*x-(2*x)-(1/4)-(-7/(-1)) = 0
5*x-2*x-1/4-7 = 0
3*x-29/4 = 0 // + 29/4
3*x = 29/4 // : 3
x = 29/4/3
x = 29/12
x = 29/12
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