Вопрос пользователя:
Решите пример
3/14 – 1 8/21 + 5/7
Илюха отвечает:
3/14- 1 8/21+5/7 = -19/42
1) 3/14 +1 8/21 – 3/14 – 29/21=9/42-58/42=-49/42=-1 1/6
2) -1 1/6 + 5/7 = -7/6 + 5/7 = -49/42+30/42= – 19/42
Решите пример
3/14 – 1 8/21 + 5/7
3/14- 1 8/21+5/7 = -19/42
1) 3/14 +1 8/21 – 3/14 – 29/21=9/42-58/42=-49/42=-1 1/6
2) -1 1/6 + 5/7 = -7/6 + 5/7 = -49/42+30/42= – 19/42