Решите уравнение 1.у-27=45 2.37+х=64 3.63-(25+z)=26

У-27=45          37+Х=64        63-(25+z)=26
у=45+27         Х=64-37         25+z=63-26
у=72              Х=27              25+z=37
Проверка       Проверка       z=37-25
72-27=45        37+27=64       z=12
                                           Проверка
                                           63-(25+12)=26