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w in (-oo:+oo)
2 = w/3.2 // - w/3.2
2-(w/3.2) = 0
2-0.3125*w = 0
2-0.3125*w = 0 // - 2
-0.3125*w = -2 // : -0.3125
w = -2/(-0.3125)
w = 6.4
w = 6.4
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