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w in (-oo:+oo)
-((2/5)*w)-3/2 = -8/3 // + -8/3
-((2/5)*w)-3/2-(-8/3) = 0
(-2/5)*w-3/2+8/3 = 0
7/6-2/5*w = 0 // - 7/6
-2/5*w = -7/6 // : -2/5
w = -7/6/(-2/5)
w = 35/12
w = 35/12
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