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y in (-oo:+oo)
4*(2*y+5/3)-(5*y) = 142 // - 142
4*(2*y+5/3)-(5*y)-142 = 0
4*(2*y+5/3)-5*y-142 = 0
4*(2*y+5/3)-5*y-142 = 0
3*y-142+20/3 = 0
3*y-406/3 = 0
3*y-406/3 = 0
3*y-406/3 = 0 // + 406/3
3*y = 406/3 // : 3
y = 406/3/3
y = 406/9
y = 406/9
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