Решите уравнения: у+2/7=1/3; х-1/6=7/9; у-3/8=5/3; у+2/5=1/2.

у+2/7=1/3у=1/3-2/7у=1/21х-1/6=7/9х=7/9+1/6х=17/18у-3/8=5/3у=5/3+3/8у=49/24=2 1/24у+2/5=1/2у=1/2-2/5у=1/10