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w in (-oo:+oo)
3*w+4 = -2*w-41 // + -2*w-41
3*w-(-2*w)+4+41 = 0
3*w+2*w+4+41 = 0
5*w+45 = 0 // - 45
5*w = -45 // : 5
w = -45/5
w = -9
w = -9
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