Question

7у-4(3у+5)=2-3(4у-9)

Answer 1

7у-4(3у+5)=2-3(4у-9)
7у-12у-20=2-12у+27
7у-12у+12у=29+20
7у=49
у=49:7
у=7
Ответ:у=7.