<span>Simplifying
18.2 + 45.4 + x = 100
Combine like terms: 18.2 + 45.4 = 63.6
63.6 + x = 100
Solving
63.6 + x = 100
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-63.6' to each side of the equation.
63.6 + -63.6 + x = 100 + -63.6
Combine like terms: 63.6 + -63.6 = 0.0
0.0 + x = 100 + -63.6
x = 100 + -63.6
Combine like terms: 100 + -63.6 = 36.4
x = 36.4
Simplifying
x = 36.4</span>
