Bonjour pouvez vous m’aidez à faire mon dm merci d’avance

Bonjour,

A = - 5/6 + 1/3

A = - 5/6 + (1 x 2) / (3 x 2)

A = - 5/6 + 2/6

A = - 3/6

A = (3 x - 1) / (3 x 2)

A = - 1/2

B = 7/ - 9 - 1/27

B = - 7/9 - 1/27

B = (- 7 x 3) / (9 x 3) - 1/27

B = - 21/27 - 1/27

B = - 22/27

C = 8/5 x 3/4

C = 24/20

C = (4 x 6) / (4 x 5)

C = 6/5

D = 45/14 x 49/55

D = 2205/770

D = (35 x 63) / (35 x 22)

D = 63/22

E = 6/4 x 1/14 x 7/3

E = 6/56 x 7/3

E = 42/168

E = (42 x 1) / (42 x 4)

E = 1/4

F = 2 : 7/5

F = 2 x 5/7

F = 14/7

F = (7 x 2) / (7 x 1)

F = 2

G = 5/3 - 7/3 x 8/21

G = 5/3 - 56/63

G = (5 x 21) / (3 x 21) - 56/63

G = 105/63 - 56/63

G = 49/63

G = (7 x 7) / (7 x 9)

G = 7/9

H = 11 : (2/3 + - 5/2)

H = 11 : (2/3 - 5/2)

H = 11 : [(2 x 2) / (3 x 2) - (5 x 3) / (2 x 3)]

H = 11 : (4/6 - 15/6)

H = 11 : - 11/6

H = 11 x - 6/11

H = - 66/11

H = (11 x - 6) / (11 x 1)

H = - 6