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Sagot :

Bonjour

A = (-25) - 18 + (-3) + 25 + 3

= -25 - 18 - 3 + 25 + 3

-25 + 25 = 0

et

- 3 + 3 = 0

donc A = -17

B = (-3.5) + (-4.8) + 5 +(- 0.2 )+ 13.5

= -3.5 + 13.5 - 4.8 -0.2 + 5

= 10 - 5 + 5

= 10

bonne soirée

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