Bonjour aidez moi svp pour cet exercice de mathematique: A=39-5×7 ;B=20+40÷8-3,5×4 ;C=[8×(5-3)-10]+2×4 ;D=10-8÷2 et en dessous il ÿ'a une ligne :4×3-9 ; E=(12

Bonjour,

A=39-5×7

A = 39 - 35

A = 4

B=20+40÷8-3,5×4

B = 20 + 5 - 14

B = 25 - 14

B = 11

C=[8×(5-3)-10]+2×4

C = (8 x 2 - 10) + 8

C = (16 - 10) + 8

C = 6 + 8

C = 14

D=10-8÷2

    4×3-9

D = (10 - 4) / (12 - 9)

D = 6/3

D = 2

E=(120-85)×3-4×(72÷6+3×2)

E = 35 x 3 - 4 x (12 + 6)

E = 105 - 4 x 18

E = 105 - 72

E = 33.

Bonsoir

A=39-5×7

A = 39 - 35

A = 4

B=20+40÷8-3,5×4

B = 20 + 5 - 14

B = 25 - 14

B = 11

C=[8×(5-3)-10]+2×4

C = (8 x 2 - 10) + 8

C = (16 - 10) + 8

C = 6 + 8

C = 14

D= (10-8÷2) / (4×3-9)

D = (10 - 4) / (12 - 9)

D = 6/3

D = 2

E=(120-85)×3-4×(72÷6+3×2)

E = 35 x 3 - 4 x (12 + 6)

E = 105 - 4 x 18

E = 105 - 72

E = 33