Réponses

2014-10-17T16:36:10+02:00

A=-22+(13-5)x(-5)    B=(-2)x(-8)+2x(-20):4

A=-22+8x(-5)            B=16+(-40):4

A=-22+(-40)              B=24:4

A=-62                       B=6

2014-10-17T16:41:27+02:00
A= -22 + (13 -5) x (-5)          
A= -22 + (-65 +25)
A= -62

B= (-2) x (-8) + 2 x (-20) : 4
B= 16 + (-40) : 4
B= 16 + (-10)
B= 6