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Exercice 1:
1 - calculer en écrivant les étapes intermédiaires :
A = 6 x 3 + 7 B = 9 14-5 x 12 C = 17- 3 x 4 D = 1+ 50+ 5 x 2
A = 6 x (3 + 7) B = 23-45 C = (3+5) x (9-7)
D = (13-7) - 2 E = 5-[4-(2 + 1)] F = (3 + 5 x 7) + 2 +1​

Sagot :

CO0309

Réponse:

A = 6 × 3 + 7

A = 18 + 7

A = 25

C = 17 - 3 × 4

C = 17 - 12

C = 5

D = 1 + 50 + 5 × 2

D = 51 + 10

D = 61

A = 6 × (3 + 7)

A = 6 × 10

A = 60

B = 23 - 45

B = -22

C = (3+5) × (9-7)

C = 8 × 2

C = 16

D = (13-7) - 2

D = 6 - 2

D = 4

E = 5 - [ 4 - (2+1)]

E = 5 - (4 - 3)

E = 5 - 1

E = 4

F = (3+5×7) + 2 + 1

F = (3+35) + 2 + 1

F = 38 + 2 + 1

F = 41

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