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