Bonjour
Exercice 3 :
A = 3/5 - 5/6 = 18/30 - 25/30 = -7/30
B = 3/5 x 5/6 = 15/30 = 1/2
C = 3/5 + 5/6 = 18/30 + 25/30 = 43/30
Exercice 4 :
A= 2/5 + (1/4 - 5/6) = 2/5 + ( 6/24 - 20/24) = 2/5 + -14/24 = -11/60
B= 3/5 - 2/5 x 2/3 = 9/15 - 4/15 = = 5/15 = 1/3
J’espère que ça t’aidera. N’hésite pas si tu as des questions.
