Решите пример 3/14 - 1 8/21 + 5/7

Question

Решите пример

3/14 - 1 8/21 + 5/7

Answer 1

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