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Sagot :

Bonjour,

a)

x= 15-8

x= 7

b)

x= 3+5

x= 8

c)

x= -20+12

x= -8

d)

x= -1+8

x= 7

e)

x= 9-15

x= -6

f)

x= -12 -5

x= -17

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