bonjour pourriez vous m'aider pour simplifier ces fractions merci et bonne fetes 9/20 + -2/5 -1/3 = et 5 -2/8 + 1/2 = et et 25/169 / 125/-26 = -6/51 / 18/-17 =

Bonjour

Simplifier les fractions :

9/20 + -2/5 -1/3

= (9 x 3) / (20 x 3) - (2 x 12) / (5 x 12) - (1 x 20) / (3 x 20)

= 27/60 - 24/60 - 20/60

= - 17/60

5 -2/8 + 1/2

= (5 x 8) / (1 x 8) - 2/8 + (1 x 4) / (2 x 4)

= 40/8 - 2/8 + 4/8

= 42/8

= (2 x 21) / (2 x 4)

= 21/4

25/169 / 125/-26

= 25/169 x (- 26/125)

= - 650/21 125

= (325 x - 2) / (325 x 65)

= - 2/65

-6/51 / 18/-17

= - 6/51 x (- 17/18)

= 102/918

= (102 x 1) / (102 x 9)

= 1/9.