Bonjour quelqu’un pourrai m’aider à résoudre Le 2.2 svp

Bonjour,

A=

42/75 +22/25 =

42/75 + 66/75 = 108/75 = 36/25

B=

85/4 - 25/5 =

425/20 - 100/20= 325/20 = 65/4

C=

-1/25 -2=

-1/25 -2/1=

-1/25 - 50/25 = -51/25

Bonjour

A = 42/75 - (- 22/25)

A = 42/75 + (22 x 3) / (25 x 3)

A = 42/75 + 66/75

A = 108/75

A = (3 x 36) / (3 x 25)

A = 36/25

B = 85/4 + 25/- 5

B = (85 x 5) / (4 x 5) - (25 x 4) / (5 x 4)

B= 425/20 - 100/20

B = 325/20

B = (5 x 65) / (5 x 4)

B = 65/4

C = - 1/25 - 2

C = - 1/25 - (2 x 25) / (1 x 25)

C = - 1/25 - 50/25

C = - 51/25