10 + 5
A = ---------
10 - 5


B = (4 - 2) (2 - 4)
--- ----
3 3


10 5A 10 5 B 4 2 2 4 3 3 class=

Sagot :

Bonjour,

Calculer:

A= (10+5) / (10-5)= 15/5= 3

B= (4-2/3)(2-4/3)= (4x3-2)/3) (2x3-4)/3)= (12-2)/3) (6-4)/3)= (10/3) (2/3)

  = (10x2)(3x3)= 20/9