Sagot :

Sylvia38

Réponse :

Bonsoir

Explications étape par étape

Ex5)

A = -7/3 * 5/4 * (-1)/3

A =( -7 * 5 * (-1))/ (3 * 4 * 3)

A =( -35 * (-1))/ 36

A = 35/36

B = 4/3 * (-5)/7 * (-1)/3 * (-5)

B = ((4 * (-5) * (-1)*(-5))/(3*7*3)

B = (-20*5)/(21*3)

B = -100/63