3x+5x+x=81

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Solution for 3x+5x+x=81 equation: 


Simplifying
3x + 5x + x = 81

Combine like terms: 3x + 5x = 8x
8x + x = 81

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

Solving
9x = 81

Solving for variable 'x'.

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

Divide each side by '9'.
x = 9

Simplifying
x = 9

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