Répondre :
5(x+2)=6(2x-7) -3(3-x)=4(3x-6) 4x(4x-2)=4xcarré+6x -8
-9+3x=12x-24 16xcarré-8x=16xcarré+6x-8
5x+10=12x-42 3x-12x=-24+9 16xcarré-16xcarré-8x-6x=-8
5x-12x=-42-10 - 9x=-15 -14x=-8
-7x=-52 x=-15/-9 x=-8/-14
x=-52/-7 x=5/3 x=4/7
x=52/7
-9+3x=12x-24 16xcarré-8x=16xcarré+6x-8
5x+10=12x-42 3x-12x=-24+9 16xcarré-16xcarré-8x-6x=-8
5x-12x=-42-10 - 9x=-15 -14x=-8
-7x=-52 x=-15/-9 x=-8/-14
x=-52/-7 x=5/3 x=4/7
x=52/7