BJ A=-63 DETAILLER SE CALCUL A=-7+7x(-3)+5x[-5+(-2)] b=-4+2[-3x(5-7)-9] RESULTAT b=-10 C=1 C=-7+7x(-3)-3DIVISER -8x5-3x(-3)

Réponse :

Bonjour!!!!!!!!

Explications étape par étape

A = -7 + 7*(-3)+5*[-5+(-2)]

A = -7 + (-21)+5*(-5-2)

A = -7 - 21 + 5 * (-7)

A = -7 -21 -35

A = -63

B = -4+2[-3*(5-7)-9]

B = -4+2[-3*(-2)-9]

B= -4+2(6-9)

B = -4+2*(-3)

B= -4+(-6)

B= -4-6

B = -10

C = ((-7+7*(-3)-3))/((-8*5-3*(-3))

C = ((-7+(-21)-3))/(-40+9)

C = (-7-21-3)/(-31)

C = -31/-31

C = 1