si vous plaît aidé moi

bonjour

-4+(-8)=-12

-4+(+11)=-4+11=7

-4+(+2.4)=-4+2.4=-1.6

-4+(+13)=-4+13=9

-4+(-6)=-10

-4+(+19)=15

-4+(-3.5)=-7.5

8-8=0

8+(+11)=19

8+(+2.4)=8+2.4=10.4

8+(+13)=21

8+(-6)=2

8+(+19)=27

8+(-3.5)=4.5

-1.9+(-8)=-9.9

-1.9+(+11)=9.1

-1.9+(+2.4)=0.5

-1.9+(+13)=11.1

-1.9+(-6)=-7.9

-1.9+(+19)=17.1

-1.9+(-3.5)=-5.4

-5.5+(-8)=-13.5

-5.5+(+11)=5.5

-5.5+(+2.4)=-3.1

-5.5+(+13)=7.5

-5.5+(-6)=-11.5

-5.5+(+19)=13.5

-5.5+(-3.5)=-9

11+(-8)=3

11+(+11)=22

11+(+2.4)=13.4

11+(+13)=24

11+(-6)=5

11+(+19)=30

11+(-3.5)=7.5