2n=1(21-n)

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Solution for 2n=1(21-n) equation: 


Simplifying
2n = 1(21 + -1n)
2n = (21 * 1 + -1n * 1)
2n = (21 + -1n)

Solving
2n = 21 + -1n

Solving for variable 'n'.

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

Add 'n' to each side of the equation.
2n + n = 21 + -1n + n

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

Combine like terms: -1n + n = 0
3n = 21 + 0
3n = 21

Divide each side by '3'.
n = 7

Simplifying
n = 7

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