Question

Помогите решить:
0,21+1.2/5
0,36-3/20

Answer 1

0,21=21/100
1,2/5=12/10*5
21/100+12/50=21/100 + 24/100=45/100= 0,45

0,36=36/100
36/100 - 3/20=36/100 - 15/100=21/100=0,21