(10у+2*(7у-2)):5=(5*(4у+3)+3у):5
(10у+14у-4):5=(20у+15+3у):5
24у-4=23у+15
24у-23у=15+4
у=19
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(10у+2*(7у-2)):5=(5*(4у+3)+3у):5
(10у+14у-4):5=(20у+15+3у):5
24у-4=23у+15
24у-23у=15+4
у=19