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w in (-oo:+oo)
(3/5)*w+8/9 = 94/45-w // - 94/45-w
(3/5)*w+w+8/9-(94/45) = 0
(3/5)*w+w+8/9-94/45 = 0
8/5*w-6/5 = 0 // + 6/5
8/5*w = 6/5 // : 8/5
w = 6/5/8/5
w = 3/4
w = 3/4
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