а) x + 8x + 11 = 146
9x = 146 - 11
9x = 135
x = 135 : 9
x = 15
б) 35x + 22x = 456
57x = 456
x = 456 : 57
x = 8
в) 32у - 27у = 60
5y = 60
y = 60 : 5
y = 12
г) 37z – z = 540
36z = 540
z = 540 : 36
z = 15
Ответ: a) x = 15; б) x = 8; в) y = 12; г) z = 15