3n+5=21-5n

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


Simplifying
3n + 5 = 21 + -5n

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

Solving
5 + 3n = 21 + -5n

Solving for variable 'n'.

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

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

Combine like terms: 3n + 5n = 8n
5 + 8n = 21 + -5n + 5n

Combine like terms: -5n + 5n = 0
5 + 8n = 21 + 0
5 + 8n = 21

Add '-5' to each side of the equation.
5 + -5 + 8n = 21 + -5

Combine like terms: 5 + -5 = 0
0 + 8n = 21 + -5
8n = 21 + -5

Combine like terms: 21 + -5 = 16
8n = 16

Divide each side by '8'.
n = 2

Simplifying
n = 2

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