My friends, help me please! 40 за уравнения. а) 34x+17x=1173 б) 48у-25у=437 в) 7t+t+27=99 г) 15z-z-16=82

а)

34x+17x=1173

51x = 1173

x = 1173 : 51

x = 23

б)

48у-25у=437

23y = 437

y = 437 : 23

y = 19

в)

7t+t+27=99

8t + 27 = 99

8t = 99 - 27

8t = 72

t = 72 : 8

t = 9

г)

15z-z-16=82

14z - 16 = 82

14z = 82 + 16

14z = 98

z = 98 : 14

z = 7