Réponses

2014-09-06T13:01:29+02:00
Calculer :

a. 45 - (12 + 9) = 45 - 21 = 24

b. (64 - 18) - (26 +13) = 46 - 39 = 7

c. 6 * (14 + 8) = 6 x 22 = 132

d. (12 - 7) * (12 + 7) = 5 x 19 = 95

e. 36 : (3 + 6) = 36 : 9 = 4

f. (39 + 33) : (15 - 7)
= 72 : 8 = 9
2014-09-06T13:07:39+02:00
A) 45-(12 +9)
= 45 -21
= 24

b) (64 -18)-(26+13)
= 46 -39
= 7

c) 6* (14 +8)
= 84 +48
= 132

d) (12-7)*(12+7)
= 144 +84 -84 -49
= 95

e) 36: (3+6)
= 36:9
= 4

f) (39 +33) : (15-7)
= 72 : 8
= 9