Calculer en détaillant les étapes.Donner le résultat sous la forme d’une fraction la plus simple possible (ou d’un entier lorsque c’est possible).Merci d’avance

Réponse :

Explications étape par étape

Bonjour

A = 4/10 + 4/6

A = (4 x 3)/(10 x 3) + (4 x 5)/(6 x 5)

A = 12/30 + 20/30

A = 32/30

A = (2 x 16)/(2 x 15)

A = 16/15

B = 10/9 + 1

B = 10/9 + 9/9

B = 19/9

C = 5/2 - 1/2

C = 4/2

C = 2

D = 7/7 - 7/4

D = 1 - 7/4

D = 4/4 - 7/4

D = -3/4

E = 8/21 + 5/3

E = 8/21 + (5 x 7)/(3 x 7)

E = 8/21 + 35/21

E = 43/21

F = 9/2 - 3

F = 9/2 - 6/2

F = 3/2

G = 10/2 - 1/9

G = (10 x 9)/(2 x 9) - (1 x 2)/(9 x 2)

G = 90/18 - 2/18

G = 88/18

G = (2 x 44)/(2 x 9)

G = 44/9

H = 8,7 - 8/3

H = 87/10 - 8/3

H = (87 x 3)/(10 x 3) - (8 x 10)/(3 x 10)

H = 261/30 - 80/30

H = 181/30

I = -9/5 + 4/2

I = (-9 x 2)/(5 x 2) + (4 x 5)/(2 x 5)

I = -18/10 + 20/10

I = 2/10

I = 2/(2 x 5)

I = 1/5