0.5n+2n=20

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Solution for 0.5n+2n=20 equation: 


Simplifying
0.5n + 2n = 20

Combine like terms: 0.5n + 2n = 2.5n
2.5n = 20

Solving
2.5n = 20

Solving for variable 'n'.

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

Divide each side by '2.5'.
n = 8

Simplifying
n = 8

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