9+3x+5x=81

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Solution for 9+3x+5x=81 equation: 


Simplifying
9 + 3x + 5x = 81

Combine like terms: 3x + 5x = 8x
9 + 8x = 81

Solving
9 + 8x = 81

Solving for variable 'x'.

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

Add '-9' to each side of the equation.
9 + -9 + 8x = 81 + -9

Combine like terms: 9 + -9 = 0
0 + 8x = 81 + -9
8x = 81 + -9

Combine like terms: 81 + -9 = 72
8x = 72

Divide each side by '8'.
x = 9

Simplifying
x = 9

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