Question

-9.7-(-15.3)+(-0.3)+14.7

Answer 1

-9,7-(-15,3)+(-0,3)+14,7=-9,7+15,3-0,3+14,7=20

Answer 2

1)-9.7-(-15.3)=5.6

2)5.6+(-0.3)=5.3

3)5.3+14.7=20

Ответ:20