9.7+(13,7-15,2)-(24,6-20,1)

Question

9.7+(13,7-15,2)-(24,6-20,1)

Answer 1

1)(13,7-15,2)=-1.5
2)(24,6-20,1)=4,5
3)9,7-1,5-4,5=3,7

Answer 2

9.7+(-1.5)-4.5
9.7-1.5-4.5=3.7