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Sagot :

Bonsoir,

A = 9 + (-16) + (-8) +22
A = 9 - 16 - 8 + 22
A = 31 - 24
A = 7

B = - 48 + 34 + 26 + (-12)
B = - 48 +34 + 26 -12
B = 60 - 60
B = 0

C = - 7,5 + 12,3 + (-2,5) + (-5) + 12,7
C = - 7,5 + 12,3 - 2,5 - 5 + 12,7
C = 25 - 15
C = 10

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