Bonsoir

A= 8 X 5-3 X 4 + 7 X 2

a=40-3\times 4+7\times 2a=40−3×4+7×2

a=40-12+7\times 2a=40−12+7×2

a=28+7\times 2a=28+7×2

a=28+14a=28+14

a=42a=42

B=7 x 9 + 4 X 5-3 X 8 + 2 x 6

b=63+20-3\times 8+2\times 6b=63+20−3×8+2×6

b=83-3\times 8+2\times 6b=83−3×8+2×6

b=83-24+2\times 6b=83−24+2×6

b=59+2\times 6b=59+2×6

b=59+12b=59+12

b=71b=71

C=4 X 12-7 X6 + 8 X 9 -7

c=48-7\times 6+8\times 9-7c=48−7×6+8×9−7

c=48-42+8\times 9-7c=48−42+8×9−7

c=6+8\times 9-7c=6+8×9−7

c=6+72-7c=6+72−7

c=78-7c=78−7

c=71c=71

D = 2 x (8 - 4)-5+7 X3

d=2\times 4-5+7\times 3d=2×4−5+7×3

d=8-5+7\times 3d=8−5+7×3

d=3+7\times 3d=3+7×3

d=3+21d=3+21

d=24d=24

Verified answer

Réponse :

A= 8 x 5 - 3 x 4 + 7 x 2

A= 40 - 12 + 14

A= 40 - 26

A= 14

B= 7x9 + 4 x 5 - 3 x 8 + 2 x 6

B= 63 + 20 - 24 + 12

B= 83 - 36

B= 47

C= 4 x 12 - 7 x 6 + 8 x 9 - 7

C= 48 - 42 + 72 - 7

C= 6 + 65

C= 71

D = 2 x ( 8 - 4 ) - 5 + 7 × 3

D = 2 x 4 - 5 + 21

D = 8 - 5 +21

D = 8 - 26

D = - 18