Вычислите 2 8/21-5/7 3 2/3-7/9

Question

Вычислите
2 8/21-5/7

3 2/3-7/9

Answer 1

1)2 8/21-5/7=50/21-15/21=35/21=5/3=1 2/3; /// 2)3 2/3-7/9=11/3-7/9=33/9-7/9=26/9=2 8/9