Решите уравнения: 132 - (х-5) * 9=69, 123 - (8 х-11) * 2=49, 3 (х+7) + 16=52, 51: (4 у-9) = 17.

132 - (х-5) * 9=69

-9 х+45=69-132

-9 х=69-132-45

-9 х=-108 |: (-12)

х=12

123 - (8 х-11) * 2=49

- (8 х-11) * 2=49-123

-8 х+11=-74/2

-8 х=-37-11

-8 х=-48 |: (-8)

х=6

3 (х+7) + 16=52

3 х+21+16=52

3 х=52-21-16

3 х=15

х=5

51: (4 у-9) = 17

4 у-9=17*51

4 у=867+9

у=876:4

у=219