Exercice ( pouvez vous m'aider svp?) - Sachant que a = 5, b = -3 et c = -10, calculer les expressions suivantes :

a= 5 b = -3 c = -10
A = a - b
A= 5 - (-3) = 5 + 3 = 8
B = b - a + c
B = - (- 3) - 5 -10
B = 3 - 5 - 10
B = 3 -15 = - 12
C= a + b - a
C = 5 - 3 -(-10)
C = 5 - 3 + 10
C = 5 + 7 = 12
D = c - a + b
D = - 10 - 5 +(-3)
D = -10 -5 - 3
D= - 18