.20(n)=80

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Solution for .20(n)=80 equation: 


Simplifying
0.20(n) = 80

Solving
0.20n = 80

Solving for variable 'n'.

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

Divide each side by '0.20'.
n = 400

Simplifying
n = 400

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