Réponses

2014-04-17T11:31:26+02:00
A) 5X (1/2+3/4)
a = 5x (2/4+3/4)
a= 5x  (5/4)
a = 25/4

b) 7/2X(3/5+1/10)
b = 7/2 x (6/10+1/10)
b =7/2 x 7/10
b = 49/20

c) 2/3+4/3X6
c = 2/3+ 24/3
c = 26/3

d) 7/8+24X5/10
d = 7/8 +120/10
d = 7/8 +12
d = 7/8+96/8
d = 103/8