9[x-9]=72

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Solution for 9[x-9]=72 equation: 


Simplifying
9[x + -9] = 72

Reorder the terms:
9[-9 + x] = 72
[-9 * 9 + x * 9] = 72
[-81 + 9x] = 72

Solving
-81 + 9x = 72

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 = 72 + 81

Combine like terms: -81 + 81 = 0
0 + 9x = 72 + 81
9x = 72 + 81

Combine like terms: 72 + 81 = 153
9x = 153

Divide each side by '9'.
x = 17

Simplifying
x = 17

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