Bonjour pouvez vous m’aider merci beaucoup

Réponse :

bonsoir

Explications étape par étape :

A = 3/2 + 4/5

A = (3 x 5)/ (2 x 5) + (4 x 2) / (5 x 2)

A = 15/10 + 8/10

A = 23/10

B = 13/15 - 3/5

B = 13/15 - ( 3 x 3)/ (3 x 5)

B = 13/15 - 9/15

B = 4/15

C =  35/4 x -28/5

C = (35 x -28)/(4 x 5)

C = 35/5 x -28/4

C = 7 x -7

C = - 49

D = 7/10 x 3/5

D = (7 x 3)/( 10 x 5)

D = 21/50

E = (12/7 + 8/7) x 4/5

E = 20/7 x 4/5

E = 80/35

E = 16/7

F = 5/8 x ( 3/4 + 7/4)

F = 5/8 x 10/4

F = 50/32

F = 25/16

G = 7 x ( 3 + 5/7)

G = 7 x ( 3 x 7 + 5)/7

G = 7 x (21 + 5)/7

G = 7 x 26/7

G = 26

H = (1/2 + 3/4) x 2/3

H = ((1 x 2)/(2 x 2) + 3/4) x 2/3

H = (2 + 3)4 x 2/3

H = 5/4 x 2/3

H = 10/12

H = 5/6

I = (12/7 + 8/7) x (7/5 - 1/5)

I = 20/7 x 6/5

I = 120/35

I = 24/7

J = 1 - ( 1/6 + 5/12)

J = 1 - ( 2 x 1 + 5)12

J = 1 - 7/12

J = (12 - 7)/12

J = 5/12

K = 2/3 x 7/5 - 4/15

K = 14/15 - 4/15

K = 10/15

K = 2/3

L = 3/4 x 4/5 + 7/2

L = 12/20 + 7/2

L = 3/5 + 7/2

L = (3 x 2 + 7 x 5)/ ( 5 x 2)

L = (6 + 35)/10

L = 41/10

M = 1/2 + 5/2 x 7/10

M = 1/2 + 35/20

M = (10 + 35)/20

M = 45/20

M = 9/4

N = 4/7 + 15/7 x 5/2

N = 4/7 + 75/14

N = (4 x 2)/( 7 x 2) + 75/14

N = (8 + 75)/14

N = 83/14

O = 1 - 5/2 x 4/15

O = 1 - 20/30

O = 1 - 2/3

O = (3 - 2)/3

O = 1/3

P = 2/7 + 5/14 x ( 2/3 + 1/3)

P = 2/7 + 5/14 x 1

P = (4 + 5)/14

P = 9/14

voilà

bonne soirée