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3/8-4 = (1/4)*x // - (1/4)*x
3/8-((1/4)*x)-4 = 0
(-1/4)*x+3/8-4 = 0
-1/4*x-29/8 = 0 // + 29/8
-1/4*x = 29/8 // : -1/4
x = 29/8/(-1/4)
x = -29/2
x = -29/2
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