3n-n=21-5

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Solution for 3n-n=21-5 equation: 


Simplifying
3n + -1n = 21 + -5

Combine like terms: 3n + -1n = 2n
2n = 21 + -5

Combine like terms: 21 + -5 = 16
2n = 16

Solving
2n = 16

Solving for variable 'n'.

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

Divide each side by '2'.
n = 8

Simplifying
n = 8

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