Bonjour,Svp aidez moi ! :D ( Sur les 3 activités )

bonjour

1.  - 26.5 x 90 = - 2 385 m

2. a = - 3 - 3 - 3 - 3 - 3 = - 15
    b = - 24
    c = - 24
    d = 0
    e = - 43.2

5.4 x ( - 8) + 5.4 x 8 
= 5.4 x 0 = 0 

5.4 x ( -8) = - 43.2
5.4 x 8 = 43.2

(-3) x ( - 7) + ( -3) x 7
= ( -3) ( - 7 + 7) = ( -3) ( 0) = 0