8.7+( 13.7- 15.2) - (24.6-20.1)

Question

8.7+( 13.7- 15.2) - (24.6-20.1)

Answer 1

1) 8,7+(13,7-15,2)-(24,6-20,1)=8,7+(-1,5)-4,5=8,7-(1,5+4,5)=8,7-6=2,7.