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w in (-oo:+oo)
10-4*w = -3*w-2 // + -3*w-2
2-4*w-(-3*w)+10 = 0
3*w-4*w+2+10 = 0
12-w = 0 // - 12
-w = -12 // * -1
w = 12
w = 12
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