Réponse :
Explications étape par étape
Bonsoir
3/2 + (-3/2) x 5/6
= 3/2 - 3/6 x 5/2
= 3/2 - 3/(2 x 3) x 5/2
= 3/2 - 1/2 x 5/2
= 3/2 - 5/4
= (3 x 2)/(2 x 2) - 5/4
= 6/4 - 5/4
= 1/4
Calculer :
A = 2/17 - 5/17 x 17/2
A = (2 x 2)/(17 x 2) - (5 x 17)/(2 x 17)
A = 4/34 - 85/34
A = (-81/34)
B = 3/9 + (-2/3)
B = 3/(3 x 3) - 2/3
B = 1/3 - 2/3
B = (-1/3)
