Réponses

2013-05-27T18:54:36+02:00
Exercice 4
A: 2+3x54
= 2+ 3x625
= 2+ 1875
= 1877
B: 5-3x23
= 5-8x8
= 5-24
= 19
C: 3x 22 + 4x52-32x23
= 12+ 100 - 9x8
= 12 + 100 -72
= 40