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(1/4)*(8*x-20) = (1/8)*(15*x-6) // - (1/8)*(15*x-6)
(1/4)*(8*x-20)-((1/8)*(15*x-6)) = 0
(1/4)*(8*x-20)+(-1/8)*(15*x-6) = 0
1/4*(8*x-20)-1/8*(15*x-6) = 0
1/4*(8*x-20)-1/8*(15*x-6) = 0
1/8*x-17/4 = 0
1/8*x-17/4 = 0
1/8*x-17/4 = 0 // + 17/4
1/8*x = 17/4 // : 1/8
x = 17/4/1/8
x = 34
x = 34
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