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x in (-oo:+oo)
x/8-(3/2) = -1/40 // + -1/40
x/8-(3/2)-(-1/40) = 0
x/8-3/2+1/40 = 0
1/8*x-59/40 = 0 // + 59/40
1/8*x = 59/40 // : 1/8
x = 59/40/1/8
x = 59/5
x = 59/5
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