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w in (-oo:+oo)
2*w+3/4 = -29/4 // + -29/4
2*w+3/4-(-29/4) = 0
2*w+3/4+29/4 = 0
2*w+8 = 0 // - 8
2*w = -8 // : 2
w = -8/2
w = -4
w = -4
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