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y in (-oo:+oo)
(3*y)/4-3 = y/2+5 // - y/2+5
(3*y)/4-(y/2)-5-3 = 0
1/4*y-8 = 0 // + 8
1/4*y = 8 // : 1/4
y = 8/1/4
y = 32
y = 32
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