Réponse :
bonjour
Explications étape par étape :
S = 16 – 5 x 4
=16-20
=-4
T = 8 x 4 – 5 x 6
=32-30
=2
U = 9 – 3 : 3
=9-1
=8
V = – 7 x (3 + 6)
=-7x9
=-63
W = 8 x (– 2) – 9 : (– 3)
=-16 +3
=-13
X= (– 8) : 4 – 5
=-2 -5
=-7
Y = (– 2 – 4) x (6 – 8)
=-6x-2
=12
Z = -6+(-5)-6×7
=-6 -5-42
=-53