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