Question

Вычислите: 5 8/21- 2 3/21+1 5/21
1-15/17
6 4/11-3 7/11

Answer 1

5 8/21-2 3/21+1 5/21= (5-2+1)+(8/21-3/21+5/21)= 4+ 10/21= 4 10/21
1-15/17= 17/17-15/17= 2/17
6 4/11-3 7/11= 5 15/11-3 7/11= (5-3)+(15/11-7/11)= 2+8/11=2 8/11