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(1/2)*(8*x-10)+(1/3)*(6*x-12) = 15 // - 15
(1/2)*(8*x-10)+(1/3)*(6*x-12)-15 = 0
1/2*(8*x-10)+1/3*(6*x-12)-15 = 0
1/2*(8*x-10)+1/3*(6*x-12)-15 = 0
6*x-15-9 = 0
6*x-24 = 0
6*x-24 = 0
6*x-24 = 0 // + 24
6*x = 24 // : 6
x = 24/6
x = 4
x = 4
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