Réponses

2014-09-17T19:57:55+02:00

Bonsoir


A=4+5×(-3)

A = 4 + (- 15)

A = 4 - 15

A = -11


B=(3-5-11)×4

B = (-13) x 4

B = - 52


C=-8-7×(-4)

C = - 8 + 28

C = + 20


D= (-9+5-15)÷(-3)+7

D = (-19) : (-3) + 7

D = 19/3 + 7

D = 19/3 + 21/3

D = 40/3