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(1/5)*(10*x-15) = (1/8)*(8-(4*x))+4 // - (1/8)*(8-(4*x))+4
(1/5)*(10*x-15)-((1/8)*(8-(4*x)))-4 = 0
(1/5)*(10*x-15)+(-1/8)*(8-4*x)-4 = 0
1/5*(10*x-15)-1/8*(8-4*x)-4 = 0
1/5*(10*x-15)-1/8*(8-4*x)-4 = 0
5/2*x-4-4 = 0
5/2*x-8 = 0
5/2*x-8 = 0
5/2*x-8 = 0 // + 8
5/2*x = 8 // : 5/2
x = 8/5/2
x = 16/5
x = 16/5
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