Ответ:
Пошаговое объяснение:
37-(х-23)=31
37 - x + 23 = 31
60 - x = 31
x = 60 - 31
x = 29
================
51-(а-17)=26
51 - a + 17 = 26
68 - a = 26
a = 68 - 26
a = 42
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Ответ:
Пошаговое объяснение:
37-(х-23)=31
37 - x + 23 = 31
60 - x = 31
x = 60 - 31
x = 29
================
51-(а-17)=26
51 - a + 17 = 26
68 - a = 26
a = 68 - 26
a = 42