To solve the equation, we can start by multiplying both sides of the equation by x to eliminate the denominators:

900/x - 900/x - 15 = 3

This simplifies to:

900 - 900 - 15x = 3x

Next, we can combine like terms:

-15x = 3x

Now, we can add 15x to both sides of the equation:

-15x + 15x = 3x + 15x

This simplifies to:

0 = 18x

Since any number multiplied by 0 is 0, we can conclude that x = 0.

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