Реши уравнение 54 у-36 у-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

54 у-36 у-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

42u = 84

u=84/42

u = 2