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W in (-oo:+oo)
W/6+5/8 = -11/8 // + -11/8
W/6+5/8-(-11/8) = 0
W/6+5/8+11/8 = 0
1/6*W+2 = 0 // - 2
1/6*W = -2 // : 1/6
W = -2/1/6
W = -12
W = -12
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