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w in (-oo:+oo)
(3/4)*w-7/9 = -127/198 // + -127/198
(3/4)*w-7/9-(-127/198) = 0
(3/4)*w-7/9+127/198 = 0
3/4*w-3/22 = 0 // + 3/22
3/4*w = 3/22 // : 3/4
w = 3/22/3/4
w = 2/11
w = 2/11
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