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4*((5/4)*x+(1/8)*x) = 4*(x+9/8) // - 4*(x+9/8)
4*((5/4)*x+(1/8)*x)-(4*(x+9/8)) = 0
4*((5/4)*x+(1/8)*x)-4*(x+9/8) = 0
11/8*4*x-4*(x+9/8) = 0
11/8*4*x-4*(x+9/8) = 0
3/2*x-9/2 = 0
3/2*x-9/2 = 0
3/2*x-9/2 = 0 // + 9/2
3/2*x = 9/2 // : 3/2
x = 9/2/3/2
x = 3
x = 3
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