Question

7,7х-7=14
Помогите!!!10баллов

Answer 1

7,7х - 7 = 14
7,7x = 14 + 7
7,7х = 21
Х = 21 : 7,7
Х = 21 : 77/10
Х = 21 • 10 : 77
Х = 210/77
Х = 30/11
Х = 2 8/11
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Проверка
77/10 • 210/77 - 7 = 14
21 - 7 = 14
14 = 14