5+3n+1n=21

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Solution for 5+3n+1n=21 equation: 


Simplifying
5 + 3n + 1n = 21

Combine like terms: 3n + 1n = 4n
5 + 4n = 21

Solving
5 + 4n = 21

Solving for variable 'n'.

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

Add '-5' to each side of the equation.
5 + -5 + 4n = 21 + -5

Combine like terms: 5 + -5 = 0
0 + 4n = 21 + -5
4n = 21 + -5

Combine like terms: 21 + -5 = 16
4n = 16

Divide each side by '4'.
n = 4

Simplifying
n = 4

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