Question

4,8:0,4+2,8:7-20,5*0,002=

Answer 1

1)4,8:0,4=12
2)2,8:7=0,4
3)20,5*0,002=0,041
4)12+0,4=12,4
5)12,4-0,041=12,359
Ответ:12,359