20n+20(2n)=480

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Solution for 20n+20(2n)=480 equation: 


Simplifying
20n + 20(2n) = 480

Remove parenthesis around (2n)
20n + 20 * 2n = 480

Multiply 20 * 2
20n + 40n = 480

Combine like terms: 20n + 40n = 60n
60n = 480

Solving
60n = 480

Solving for variable 'n'.

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

Divide each side by '60'.
n = 8

Simplifying
n = 8

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