6x-3x-=0

To solve this equation, you can combine like terms on the left side of the equation:

6x - 3x = 0

When you subtract 3x from 6x, you get:

3x = 0

Now, divide both sides of the equation by 3 to solve for x:

3x/3 = 0/3

x = 0

Therefore, the solution to the equation is x = 0.