Реши уравнение 54у-36у-9=153 (15u-21)*3+27=234 (36t+98)\14=25 (12u+30u+42)\6=21
54y-36y-9=153
18y-9=153
18y=153+9
18y=162
y=162:18
y= 9
(15u-21)*3+27=234
(15u-21)*3=234-27
(15u-21)*3= 207
15u-21=207:3
15u-21= 69
15u=69+21
15u= 90
u=90:15
u= 6
(36t+98):14=25
36t+98=25*14
36t+98= 350
36t=350-98
36t= 252
t=252:36
t= 7
(12u+30u+42):6=21
42u+42 =21*6
42u+42= 126
42u=126-42
42u= 84
u=84:42
u= 2
54у-36у-9=153 (15u-21)*3+27=234 (36t+98)\14=25
18y=153+9 45u-63=234-27 36t+98=25*14
18y= 162 45u=207+63 36t=350-98
y=162/18 45u=270 36t=252
y= 9 u=270/45 t=252/36
u=6 t=7
(12u+30u+42)\6=21
42u+42=21*6
42u= 126-42
u=84/42