Bonjour aidez moi svp merci ​

Bonjour !

A = 5/4 - 3/16

A = 20/16 - 3/16

A = 17/16

B = 9/10 + -5/2

B = 9/10 - 25/10

B = -16/10

B = -8/5

C = 1 - 17/15

C = 15/15 - 17/15

C = -2/15

D = 3 + -7/5 - 17/20

D = 60/20 - 28/20 - 17/20

D = 15/20

D = 3/4

E = -1,3/-8 + 23/-1,6

E = 2,08/-12,8 + 184/-12,8

E = 186,08/-12,8

F = -4 + 16/3 - (-11/12)

F = -48/12 + 64/12 + 11/12

F = 27/12

F = 9/4

J'espère t'avoir aidé. Bon courage !