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Sagot :

Bonjour,

Développer :

a. 4n+3n+1= 7n+1

b. 17+10+2x= 2x+27

c. 13k-20k-40= -20k-27

d. 8m+4-2m-5= 6m-1

e. -2t+1-t= -3t+1

f. 40x+16+3= 40x+19

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