24 + (x - 43) = 68
24 + x - 43 = 68
x - 19 = 68
x = 68 + 19
x = 87
Проверка:
24 + (87 - 43) = 68
24 + 44 = 68
68 = 68
Ответ: x = 87
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(175 - x) - 56 = 82
175 - x - 56 = 82
119 - x = 82
- x = 82 - 119
- x = - 37
x = 37
Проверка:
(175 - 37) - 56 = 82
138 - 56 = 82
82 = 82
Ответ: x = 37
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325 - (x + 50) = 214
325 - x - 50 = 214
275 - x = 214
- x = 214 - 275
- x = - 61
x = 61
Проверка:
325 - (61 + 50) = 214
325 - 111 = 214
214 = 214
Ответ: x = 61