Question

25,7-4,09+25,7-7,91;​

Answer 1

25,7-4,09=21,61
25,7-7,91=17,79
21,61+17,79=39,4

Answer 2

Ответ:

25,7-4,09=21,61

21,61+25,7=47,31

47,31-7,91=39,4