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2013-09-11T13:37:28+02:00
A= +9
b) 36
c= 11
d) 14
e) 8
Exercice 3

a) 7 X (20 -(6+5))
7X (20-(11)
7 X(20-11)
7 X (9) = 63

b) (34 -(25 -6)) X8
34 -19 X8
34 -152 = -118

c) (6,8 X (19 - (5 + 7))
6,8 X (19 - 12)
6,8 X 19 -12
129,20 -12 = 117,20

d) 32 divisé (25 -(11+6)
32/ ( 25 - 17)
32/ 8 = 4