Bonjour, j'aurais besoin d'aide svp!!

S = 25 - (8-3) + 1
S =
S =
S =

T = 25 - 8 - (3+1)
T =
T =
T =

U = 25 - (8-3+1)
U =
U =
U =

V = 18 - {4×(5-3)+2}
V =
V =
V =
V =

aider moi svp
Merci bcp.​