Question

Вычислить:
1. 8-4 5/7- 1 1/7
2. 3 1/5-1 3/5+7 4/5
3. 17+9/13-3 10/13

Answer 1

1)8-4 5/7-1 1/7= 7 7/7-33/7-8/7=56/7-33/7-8/7=15/7=2 1/7

2) 3 1/5-1 3/5+7 4/5= 16/5-8/5+39/5=47/5=9 2/5

3) 17+9/13-3 10/13= 16 17/17+9/13-49/13= 225/13+9/13-49/13=185/13=14 3/13