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Sagot :

Bonjour,

a. 4n + (3n + 1)

= 4n + 3n + 1

= 7n + 1

b. 17 - 2 * (- 5 - x)

= 17 + 10 + 2x

= 2x + 27

c. 13k - (2k + 4) * 10

= 13k - 20k - 40

= - 7k - 40

d. 8m + 4 + (- 2m - 5)

= 8m + 4 - 2m - 5

= 6m - 1

e. (- 2t + 1) - t

= - 2t + 1 - t

= - 3t + 1

f. 8 (5x + 2) + 3

= 40x + 16 + 3

= 40x + 19.

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