Question

(3,7-8,6)*(3,1)-5,09=

Answer 1

1)3,7-8.6=-4.9
2)-4.9×3.1=-15,19
3)-15,19-5,09=-20,28

Не за что!

Answer 2

(3,7-8,6)×(3,1)-5,09=
-4,9×3,1-5,09
-15,19-5,09
=-20,28