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