7+4(3-у)=5(у+2)
7+12-4у=5у+10
-4у-5у=10-7-12
-9у=-9
у=1
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7+4(3-у)=5(у+2)
7+12-4у=5у+10
-4у-5у=10-7-12
-9у=-9
у=1
Ответ:1