x = 0
3x + 2 = 3x + 6 This is not possible.
3x-6=21-6=15
3x = 18divide both sides by 3x = 6
5x - 4 = 3x + 6 5x - 3x = 6 + 4 2x = 10 x = 5
3x+y=6
If: 3x+6 = 18 Then: x = 4
3x-3 = 6 3x = 6+3 3x = 9 x = 3
3x+12 = 18 3x = 18-12 3x = 6 x = 2
6-3x+12=0 6+12-3x=0 18-3x=0 18=3x x=6
3x-6y=9 -3x -3x -6y=9-3x __ ____ -6 -6 y=9-3x ____ -6
6x-3x =6 3x=6 so 6 divided by 3 = 2
3x-2y=6 -2y=-3x+6 y=1.5x-3