Répondre :
a) 6x=4-7+x
6x-x=-3
5x=-3
x=-3/5
b) 2(x-4)=5x-23
2x-8=5x-23
2x-5x=-23+8
-3x=-15
x= -15/-3= 5
c) 2x+3=3x-1
2x-3x= -4
-x=-4
x=4
a) 6x=4-7+x
6x-x=-3
5x=-3
x=-3/5
b) 2(x-4)=5x-23
2x-8=5x-23
2x-5x=-23+8
-3x=-15
x= -15/-3= 5
c) 2x+3=3x-1
2x-3x= -4
-x=-4
x=4