n+5=3n+21

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


Simplifying
n + 5 = 3n + 21

Reorder the terms:
5 + n = 3n + 21

Reorder the terms:
5 + n = 21 + 3n

Solving
5 + n = 21 + 3n

Solving for variable 'n'.

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

Add '-3n' to each side of the equation.
5 + n + -3n = 21 + 3n + -3n

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

Combine like terms: 3n + -3n = 0
5 + -2n = 21 + 0
5 + -2n = 21

Add '-5' to each side of the equation.
5 + -5 + -2n = 21 + -5

Combine like terms: 5 + -5 = 0
0 + -2n = 21 + -5
-2n = 21 + -5

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

Divide each side by '-2'.
n = -8

Simplifying
n = -8

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