svp aidée moi sur cette exercice et mrc 1) Calculer : A = 10 + 1,5 - 4 - 1,5 ; B = -8 -2 +4 ; C = -3 2-7 (-2) - 1 D = 9+(-3) x 5+3 ; E = 12 - 6+(-3) x4 ; F = 4

Réponse :

Bonjour

Explications étape par étape :

A = 10 + 1,5 - 4 - 1,5

A = 11,5 - 5,5

A = 6

B = -8 -2 +4

B = -10 + 4

B = -6

C = -3 2-7 (-2) - 1 peut-être cette expression est mal écrite !

C = - 32 + 14 -1

C = -33 + 14

C = -19

D = 9+(-3) x 5+3

D = 9 -3 X 5 + 3

D = 9 -15 + 3

D = 12 - 15

D = -3

E = 12 - 6+(-3) x4

E = 12 -6 -3 X 4

E = 12 -6 -12

E = -6

F = 4 + 2 x (3-7)

F = 4 + 2 X -4

F = 4 -8

F = -4

G = [20 - (15 + 2)2 = (-3) + 3

G = (20 - 17 X 2 -3 + 3

G = 20 -34

G = -14

H = 30 - [10 + (20 - 10 ÷ 5) ÷ 9] ×(-2)​

H = 30 - ( 10 + (20 -2) /9) X -2

H = 30 - ( 10 + 18/9) X -2

H = 30 - (10 +2 X -2)

H = 30 - (10 -4)

H = 30 -6

H = 24

Bonjour

A = 10 + 1,5 - 4 - 1,5

= 11,5 - 5,5

= 6

B = -8 -2 +4

= -10 + 4

= -6

C = -3 2-7 (-2) - 1

= -6 + 14 -1

= -7 + 14

= 7

D = 9+(-3) x 5+3

= 9 -3 X 5 + 3

= 9 -15 + 3

= 12 - 15

= -3

E = 12 - 6+(-3) x4

= 12 -6 -3 X 4

= 12 -6 -12

= -6

F = 4 + 2 x (3-7)

= 4 + 2 X -4

= 4 -8

= -4

H = 30 - [10 + (20 - 10 ÷ 5) ÷ 9] ×(-2)​

= 30 - ( 10 + (20 -2) /9) X -2

= 30 - ( 10 + 18/9) X -2

= 30 - (10 +2 X -2)

= 30 - (10 -4)

= 30 -6

H = 24