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Sagot :

Bonjour,

a.(-4)-(-5) = -9

-4 + 5 = 1

b.(-6)-(+2) = -8 juste

c. (-3) - (-4) =

-3 + 4  = 1  

d.(-5) - (+5) = 0​

-5 -5 = -10

règle des signes:

-(-) => +

-(+) => -

+(-) = -

+(+) = +

EPHTAMINA890

a.(-4)-(-5)

=-4+5

=1 donc c'est faux

b.(-6)-(+2)

=-6-2

=-8 vrai

c. (-3) - (-4)

=-3+4

=1 donc faux

d.(-5) - (+5)

=-5-5

=-10 donc faux

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