Ответ:
1/2
Пошаговое объяснение:
2 - 1 8/21х = 13/14 + 8/21
2 - 1 8/21х = 39/42 + 16/42
2 - 1 8/21х = 55/42
2 - 1 8/21х = 1 13/42
1 8/21х = 2 - 1 13/42
1 8/21х = 1 42/42 - 1 13/42
29/21х = 29/42
х = 29/42 : 29/21
х = 29/42 * 21/29
х = 1/2 * 1/1
х = 1/2
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Ответ:
1/2
Пошаговое объяснение:
2 - 1 8/21х = 13/14 + 8/21
2 - 1 8/21х = 39/42 + 16/42
2 - 1 8/21х = 55/42
2 - 1 8/21х = 1 13/42
1 8/21х = 2 - 1 13/42
1 8/21х = 1 42/42 - 1 13/42
29/21х = 29/42
х = 29/42 : 29/21
х = 29/42 * 21/29
х = 1/2 * 1/1
х = 1/2