Réponse : Bonsoir
A = x - (y + z)
x=3; y=4; z=5
A = 3 - (4 + 5)
A = 3 - 9
A = -6
x=-1; y=3; Z=-2
A = -1 - (3 - 2)
A = -1 - 1
A = -2
x=-7;y=-5; z=4
A = -7 - (-5 + 4)
A = -7 - (-1)
A = -7 + 1
A = -6
x=-4;y=-1; z=-8
A = -4 - (-1 - 8)
A = -4 - (-9)
A = -4 + 9
A = 5
Explications étape par étape :