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Sagot :

A= -5+7-8+4
A= -13+11
A=-2

B=(-7)+(+8)-(-8)-(+11)
B=-7+8+8-11
B=-18+16
B=-2

C=-(-12)-(+10)+(-4)+(+2)-(-3)
C=12-10-4+2+3
C=15-14
C=1

D=-14+(-11)-(-4)-8-(-14)
D=-14-11+4-8+14
D=-33+18
D= -15

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