Réponses

2014-09-17T15:32:01+02:00
A)
5 - 4 x 3 + 2 = 5
(5 - 4) x 3 + 2 = 5
b)
5 - 4 x 3 + 2 = -15
5 - 4 x (3 + 2) = -15
c)
5 - 4 x 3 + 2 = -9
5 - (4 x 3 + 2) = -9
d)
5 - 4 x 3 + 2 = -5
Laisse le calcul comme il est.