Ответ:
5/7
Пошаговое объяснение:
1/14 + 1/14 = 1 + 1/14 = 2/14 = 1 · 2/7 · 2 = 1/7
1/7 + 3/7 = 1 + 3/7 = 4/7
4/7 + 1/14 = 4 · 2/7 · 2 + 1 · 1/14 · 1 = 8/14 + 1/14 = 8 + 1/14 = 9/14
9/14 + 1/14 = 9 + 1/14 = 10/14 = 5 · 2/7 · 2 = 5/7
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Answers & Comments
3/8
Объяснение:
правельно: 5/7
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7
Ответ:
5/7
Пошаговое объяснение:
1/14 + 1/14 = 1 + 1/14 = 2/14 = 1 · 2/7 · 2 = 1/7
1/7 + 3/7 = 1 + 3/7 = 4/7
4/7 + 1/14 = 4 · 2/7 · 2 + 1 · 1/14 · 1 = 8/14 + 1/14 = 8 + 1/14 = 9/14
9/14 + 1/14 = 9 + 1/14 = 10/14 = 5 · 2/7 · 2 = 5/7