4x+8x=81

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Solution for 4x+8x=81 equation: 


Simplifying
4x + 8x = 81

Combine like terms: 4x + 8x = 12x
12x = 81

Solving
12x = 81

Solving for variable 'x'.

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

Divide each side by '12'.
x = 6.75

Simplifying
x = 6.75

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