Пошаговое объяснение:
60+(21-х) = 76
21-x = 76-60
21-x = 16
x = 21-16
x = 5
(х-14)+8 = 123
x-14 = 123 - 8
x-14 = 115
x = 115+14
x = 129
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Answers & Comments
21-х=76-60
21-х=16
х=21-16
х=5
(х-14)+8=123
х-14=123-8
х-14=115
х=115+14
х=129
Надеюсь правильно)))
Пошаговое объяснение:
60+(21-х) = 76
21-x = 76-60
21-x = 16
x = 21-16
x = 5
(х-14)+8 = 123
x-14 = 123 - 8
x-14 = 115
x = 115+14
x = 129