Réponse :
A = 4/3 - 2/3 x 5/8 ordre de priorité la x
= 4/3) - 5/12
= 16/12 - 5/12
= 11/12
B = (4 - 2/3)(2 - 4/3)
= (12/3 - 2/3)(6/3 - 4/3)
= 10/3 x 2/3
= 20/9
C = (2/3 - 1/4)/(2/3 + 1/4)
= (8/12 - 3/12)/(8/12 + 3/12)
= 5/12/11/12
= 5/11
D = (- 7/5 + 4/3) ÷ (7 - 4/3)
= (-21/15 + 20/15) ÷ (21/3 - 4/3
= - 1/15/17/3
= - 1/85
E = 2/3 - 5/3 x (1 - 1/5)
= 2/3 - 5/3 x 4/5
= 2/3 - 4/3
= - 2/3
Explications étape par étape :
