9909-9009=x

Solution for 9909-9009=x equation:

Simplifying
9909 + -9009 = x

Combine like terms: 9909 + -9009 = 900
900 = x

Solving
900 = x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-1x' to each side of the equation.
900 + -1x = x + -1x

Combine like terms: x + -1x = 0
900 + -1x = 0

Add '-900' to each side of the equation.
900 + -900 + -1x = 0 + -900

Combine like terms: 900 + -900 = 0
0 + -1x = 0 + -900
-1x = 0 + -900

Combine like terms: 0 + -900 = -900
-1x = -900

Divide each side by '-1'.
x = 900

Simplifying
x = 900