The strict answer to this question is that it is an equation. Being an accomplished mind-reader I believe you wish to know the value of x. So add 2x to each side to get -17=6+x, then subtract 6 from each side to get -23 = x
X equals 4
5
(9,6)
-6x-4-8 = -6x -12
If: 6x-6 = 4x Then: x = 3
6x+x = 7x
-6x
-6x = 12 x = -2
If: 6x = 48 Then: x = 8
6x+4=52 6x=48 x=8
-6x + y = 9 (+6x) -> y = 6x + 9
6x-5 = 7, 6x = 7+5, 6x = 12, x = 2