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Ответ:

Пошаговое объяснение:

(x - 12)*8 = 56

x - 12 = 56:8

x - 12 = 7

x = 7+12

x = 19

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24*(z + 9) = 288

z + 9 = 288:24

z + 9 = 12

z = 12-9

z = 3

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124:(y - 5) = 31

y - 5 = 124:31

y - 5 = 4

y = 4+5

y = 9

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38x + 15 = 91

38x = 91-15

38x = 76

x = 76:38

x = 2

==============

44 : z + 9 = 20

44 : z = 20-9

44 : z = 11

z = 44 : 11

z = 4

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