Bonjours je n’arrive pas à résoudre les exercices 1 et 2 svp aider moi je vous remercie d’avance

Bonjour,

1) a)

3575 = 5 x 5 x 11 x 13

4225 = 5 x 5 x 13 x 13

G = 3575/4225

G = [(5 x 5 x 13) x 11] / [(5 x 5 x 13) / 13]

G = (325 x 11) / (325 x 13)

G = 11/13

b)

H = G + 4/26

H = 11/13 + 4/26

H = (11 x 2) / (13 x 2) + 4/26

H = 22/26 + 4/26

H = 26/26

H = 1

2)

A= 2/3 - 7/3 x 8/21

A = 2/3 - 56/63

A = (2 x 3) / (3 x 3) - (7 x 8) / (7 x 9)

A = 6/9 - 8/9

A = - 2/9

B = (3/4 - 5/6) x 3/2

B = [(3 x 3) / (4 x 3) - (5 x 2) / (6 x 2)] x 3/2

B = (9/12 - 10/12) x 3/2

B = - 1/12 x 3/2

B = - 3/24

B = (3 x - 1) / (3 x 8)

B = - 1/8

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

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

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

C = 11 : - 11/6

C = 11 x - 6/11

C = - 66/11

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

C = - 6