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w in (-oo:+oo)
(-1/2)*w+3 = 59/22 // - 59/22
(-1/2)*w-(59/22)+3 = 0
(-1/2)*w-59/22+3 = 0
7/22-1/2*w = 0 // - 7/22
-1/2*w = -7/22 // : -1/2
w = -7/22/(-1/2)
w = 7/11
w = 7/11
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