Réponse :
Explications :
bonsoir
tu applique la règle a+b
(6x-1)+(-4x-1)
= 6x-4x-1-1
= 2x-2
(-4x-1)+(5-3x)
= -4x-3x-1+5
= -7x+4
(2x-3)+(6x-1)
= 2x+6x-3-1
= 8x-4
2-3x+6x-1=3x+1
-4x-1+5-3x=-7x+4
6x-1-4x-1=2x-2
3x+1+2x-2=5x-1
2x-2-7x+4=-5x+2
5x-1-5x+2=1
