- 6+ 5x = 6x - 3
move -6 to the other side
sign changes from -6 to +6
-6+6+5x= 6x-3+6
5x= 6x-3+6
5x= 6x+3
move -6x to the other side
sign changes from +6x to -6x
5x-6x= 6x-6x+3
5x-6x= 3
-x= 3
mutiply both sides by -1 to get +x
(-1)(-x)= x , (-1)(3)= -3
Answer: x= -3