x+.8x=20

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Solution for x+.8x=20 equation: 


Simplifying
x + 0.8x = 20

Combine like terms: x + 0.8x = 1.8x
1.8x = 20

Solving
1.8x = 20

Solving for variable 'x'.

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

Divide each side by '1.8'.
x = 11.11111111

Simplifying
x = 11.11111111

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