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w in (-oo:+oo)
(-2/3)*(w-(4/9)) = -3 // + 3
(-2/3)*(w-(4/9))+3 = 0
(-2/3)*(w-4/9)+3 = 0
3-2/3*(w-4/9) = 0
3-2/3*(w-4/9) = 0
89/27-2/3*w = 0
89/27-2/3*w = 0
89/27-2/3*w = 0 // - 89/27
-2/3*w = -89/27 // : -2/3
w = -89/27/(-2/3)
w = 89/18
w = 89/18
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