Bonjour aide moi svp A 3x + 4= 4x-1 B 4- x = 5x-2 C x-1=3x +1

A 3x + 4= 4x-1
3x-4x+4=-1
-x=-1-4
-x=-5
x=5

B 4- x = 5x-2
4-x-5x=-2
-6x=-2-4
-6x=-6
x=1

C x-1=3x +1
x-3x=1+1
-2x=2
x=-2/2
x=-1