5x=81-4x

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Solution for 5x=81-4x equation:


Simplifying
5x = 81 + -4x

Solving
5x = 81 + -4x

Solving for variable 'x'.

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

Add '4x' to each side of the equation.
5x + 4x = 81 + -4x + 4x

Combine like terms: 5x + 4x = 9x
9x = 81 + -4x + 4x

Combine like terms: -4x + 4x = 0
9x = 81 + 0
9x = 81

Divide each side by '9'.
x = 9

Simplifying
x = 9

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