ДРОБИ (1/2+1/5):2-3/10

Question

ДРОБИ (1/2+1/5):2-3/10

Answer 1

1)1/2+1/5=5/10+2/10=7/10
2)7/10:2=7/10:2/1=7/10:1/2=7/20
3)7/20-3/10=7/20-6/20=1/20

Answer 2

3\5: 2 - 3\10 =6\10: 2- 3\10= 3\10 : 2 = 0, 3: 2= 0,15