Question

Найди сумму или разность:
7/10 -2/5 
3/4 -1/6 
4/45 -1/30
1/3 +1/6

Answer 1

1)7/10 - 2/5 = 7/10 - 4/10 = 3/10
2)3/4 - 1/6 = 9/12 - 2/12 = 7/12
3)4/45 - 1/30 = 8/90 - 3/90 = 5/90 = 1/18
4)1/3 + 1,6 = 2/6 + 1/6 = 3/6 = 1/2