Question

Вычислите 9/10 + 4/5; 5/6- 2/3; 5/7 - 9/14

Answer 1

1) 9/10+4/5 = 9/10+8/10 = 1 целая 7/10
2) 5/6-2/3 = 5/6-4/6 = 1/6
3) 5/7-9/14 = 10/14-9/14 = 1/14