9(9+x)=216

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Solution for 9(9+x)=216 equation: 


Simplifying
9(9 + x) = 216
(9 * 9 + x * 9) = 216
(81 + 9x) = 216

Solving
81 + 9x = 216

Solving for variable 'x'.

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

Add '-81' to each side of the equation.
81 + -81 + 9x = 216 + -81

Combine like terms: 81 + -81 = 0
0 + 9x = 216 + -81
9x = 216 + -81

Combine like terms: 216 + -81 = 135
9x = 135

Divide each side by '9'.
x = 15

Simplifying
x = 15

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