Решить уравнения: (15u-21) * 3+27=234; (36t+98) : 14=25; (12v+30v+42) : 6=21

(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

(12v+30v+42) : 6=21

42v+42=21*6

42v+42=126

42v=126-42

42v=84

v=84:42

v=2