Bonsoir,

U=16-5x4

U=16-20

U=-4

V=8x4-5x6

V=32-30

V=2

W=9-3:3

W=9-1

W=8

X=-7x(3+6)

X=-21+(-42)

X=-21-42

X=-63

Y=(-2-4)x(6-8)

Y=-6x(-2)

Y=12

Z=7-[6-(3-8)]

Z=7-[6-(-5)]

Z=7-(6+5)

Z=7-11

Z=-4