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y in (-oo:+oo)
3*y+1/9 = 4*y+4/9 // - 4*y+4/9
3*y-(4*y)+1/9-(4/9) = 0
3*y-4*y+1/9-4/9 = 0
-y-1/3 = 0 // + 1/3
-y = 1/3 // * -1
y = -1/3
y = -1/3
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