lucienjoly

Bonjour,

a) 4n + 3n + 1

= 7n + 1

b) 17 + 10 + 2x

= 27 + 2x

c) 13k - 20k - 40

= -7k - 40

d) 8m + 4 - 2m - 5

= 6m - 1

e) -2t + 1 - t

-3t + 1

f) 40x + 16 + 3

= 40x + 19