8x=81-x

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Solution for 8x=81-x equation:


Simplifying
8x = 81 + -1x

Solving
8x = 81 + -1x

Solving for variable 'x'.

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

Add 'x' to each side of the equation.
8x + x = 81 + -1x + x

Combine like terms: 8x + x = 9x
9x = 81 + -1x + x

Combine like terms: -1x + x = 0
9x = 81 + 0
9x = 81

Divide each side by '9'.
x = 9

Simplifying
x = 9

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