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Sagot :

Bonjour,

a : -5+(-8)-6+(-4)-(-6)+10

= -5 -8 -6 -4 +6 +10 = -7

b : -5+(-4)-(-2)+(-8)-(-7)-6-(+4)

=  -5 -4 +2 -8 +7 -6 -4 =  -18

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