aide svp c pour demain !!!!!!*

Bonsoir,

A = (+ 8) + (+ 2)
A = 8 + 2
A = 10

B = (- 7) + (+ 5)
B = - 7 + 5
B = - 2

C = (- 4) + (+ 6)
C = - 4 + 6
C = 2

D = (- 4) + (+ 7)
D = - 4 + 7
D = 3