svp merci d'avance . ​

Réponse :

Explications :

Bonjour

Simplifier :

A = 1/4 - 9/4

A = (1 - 9)/4

A = (-8/4)

A = (-2 x 4)/4

A = -2

C = 2 + 5/3

C = (2 x 3)/3 + 5/3

C = 6/3 + 5/3

C = 11/3

E = 1/3 + 2/3

E = (1 + 2)/3

E = 3/3

E = 1

A = 7/2 - 9/10

A = (7 x 5)/(2 x 5) - 9/10

A = 35/10 - 9/10

A = (35 - 9)/10

A = 26/10

A = 2,6

C = -3/30 - 5/20

C = -3/(3 x 10) - 5/20

C = -1/10 - 5/20

C = (-1 x 2)/(10 x 2) - 5/20

C = -2/20 - 5/20

C = -7/20

E = -4/-11 - 2/5

E = 4/11 - 2/5

E = (4 x 5)/(11 x 5) - (2 x 11)/(5 x 11)

E = 20/55 - 22/55

E = (20 - 22)/55

E = (-2/55)

A = 2/3 x 5/7

A = (2 x 5)/(3 x 7)

A = 10/21

C = -8/30 x -10/16

C = 10/30 x 8/16

C = 10/(3 x 10) x 8/(2 x 8)

C = 1/3 x 1/2

C = 1/(2 x 3)

C = 1/6

E = 2/3 : 5/7

E = 2/3 x 7/5

E = (2 x 7)/(3 x 5)

E = 14/15

G = -8/30 : -10/16

G = 8/30 x 16/10

G = 8/30 x (2 x 8)/(2 x 5)

G = 8/30 x 8/5

G = (8 x 8)/(30 x 5)

G = 64/150