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(1/2)*(8*x+14)-18 = (-2/3)*(12*x-9) // - (-2/3)*(12*x-9)
(1/2)*(8*x+14)-((-2/3)*(12*x-9))-18 = 0
(1/2)*(8*x+14)+(2/3)*(12*x-9)-18 = 0
1/2*(8*x+14)+2/3*(12*x-9)-18 = 0
1/2*(8*x+14)+2/3*(12*x-9)-18 = 0
12*x-18+1 = 0
12*x-17 = 0
12*x-17 = 0
12*x-17 = 0 // + 17
12*x = 17 // : 12
x = 17/12
x = 17/12
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