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(2*x+1)/5 = (6*x-6)/12 // - (6*x-6)/12
(2*x+1)/5-((6*x-6)/12) = 0
(2*x+1)/5+(-1*(6*x-6))/12 = 0
(12*(2*x+1))/(5*12)+(-1*5*(6*x-6))/(5*12) = 0
12*(2*x+1)-1*5*(6*x-6) = 0
42-6*x = 0
(42-6*x)/(5*12) = 0
(42-6*x)/(5*12) = 0 // * 5*12
42-6*x = 0
42-6*x = 0 // - 42
-6*x = -42 // : -6
x = -42/(-6)
x = 7
x = 7
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