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Sagot :

Bonjour

A = - 12 - 7 + 12 - 1.4

= - 19 + 12 - 1.4

= - 7 - 1.4

= -8.4

B = - 3.5 + 13.5 - 9.4 + 2.6

= 10 - 6.8

= 3.2

Bonne journée

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