99=x-105

Solution for 99=x-105 equation:

Simplifying
99 = x + -105

Reorder the terms:
99 = -105 + x

Solving
99 = -105 + 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.
99 + -1x = -105 + x + -1x

Combine like terms: x + -1x = 0
99 + -1x = -105 + 0
99 + -1x = -105

Add '-99' to each side of the equation.
99 + -99 + -1x = -105 + -99

Combine like terms: 99 + -99 = 0
0 + -1x = -105 + -99
-1x = -105 + -99

Combine like terms: -105 + -99 = -204
-1x = -204

Divide each side by '-1'.
x = 204

Simplifying
x = 204