Bjr qlq pourrait m aider svp merci d avance pour votre réponse ​

1)

-(-6x)+(7x+1) = 6x + 7x +1 =13x +1

2)

22x-(11x+5)-(-3) =22x-11x-5+3 =11x-2

3)

(17m-3n+16m+n).2 -3m +n =(33m-2n).2 -3m+n =66m-4n-3m+n = 63m-3n

4)

2ab.7b.(18ac-14ac) = 2ab.7b(4ac) = 2ab.7b.4ac = 56.a².b².c