Решите уровнения 
б) 3,5х+2,2х=4,56
в) 3,2y-2,7у=0,6
г) 3,7z-z=0,54

б)3.5х+2.2х=4.565.7х=4.56х=4.56:5.7х=0.8Проверка:3.5+2.2*0.8=5.7*0.8=4.56в)3.2у-2.7у=0.60.5у=0.6y=0.6:0.5у=1.2Проверка:3.2-2.7*1.2=0.5*1.2=0.6г)3.7z-z=0.542.7z=0.54z=0.54:2.7z=0.2Проверка:3.7*0.2-0.2=0.74-0.2=0.54