Question

Помогите решить, пожалуйста!

Answer 1

1)
6-4 1/2=1 1/2
1 1/2÷0.03=3/2÷3/100=3/2×100/3=
=50

2)
3 1/20-2.65=3 1/20-2 65/100=
=3 1/20-2 13/20=2 21/20-2 13/20=
=8/20=2/5
2/5×4=8/5

Answer 2

8/5+2/5=10/5=2

Answer 3

3) 0.3-3/20=3/10-3/20=6/20-3/20=3/20.

Answer 4

3/20×1 1/2=3/20×3/2=9/40