Réponse :
Bonjour,
Explications étape par étape
A=3-(-4+5)+(6-9) = 3-1+(-3) = 2+(-3) = -1
B=1-(2-3)-(4-5 )= 1-(-1)-(-1) = 1+1+1 = 3
C=2-[1-(2+4)] = 2-(1-6) = 2-(-5) = 2+5 = 7
D=(2-(-2))-(2-(-4)) = (2+2)-(2+4) = 4-6 = -2
E=-5-10-[-8-(4-3)] = -5-(-8-1) = -5-(-9) = -5+9 = 4
F=-(-8+4)-[-13-(5-11)] = -4-(-13-6) = -4-(-19) = -4+19 = 15
G=2-(3-2)+(4-7)-(4-(-3)) = 2-1+(-3)-7 = 1+(-3)-7 = 1-3-7 = -2-7 = -9
J'espère t'avoir aidé.
N'hésites pas si tu as des questions.
