Réponses

2014-01-27T21:04:27+01:00
Bonsoir

a) 11 +2x -12 -12x - 24 = -10x -25
b) -2x +10 -21 +12x = 10x - 11
c) 8 +2y -10y +30 +4 = -8y +42
d) -7y - 12y +24 + 3 +6y -14 = -13y +13
e)- 5z + 10z -15z - 42 + 56z = 46z -42