81=6x+9

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Solution for 81=6x+9 equation:


Simplifying
81 = 6x + 9

Reorder the terms:
81 = 9 + 6x

Solving
81 = 9 + 6x

Solving for variable 'x'.

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

Add '-6x' to each side of the equation.
81 + -6x = 9 + 6x + -6x

Combine like terms: 6x + -6x = 0
81 + -6x = 9 + 0
81 + -6x = 9

Add '-81' to each side of the equation.
81 + -81 + -6x = 9 + -81

Combine like terms: 81 + -81 = 0
0 + -6x = 9 + -81
-6x = 9 + -81

Combine like terms: 9 + -81 = -72
-6x = -72

Divide each side by '-6'.
x = 12

Simplifying
x = 12

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