8+12n-5=8n+21-5n

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Solution for 8+12n-5=8n+21-5n equation:


Simplifying
8 + 12n + -5 = 8n + 21 + -5n

Reorder the terms:
8 + -5 + 12n = 8n + 21 + -5n

Combine like terms: 8 + -5 = 3
3 + 12n = 8n + 21 + -5n

Reorder the terms:
3 + 12n = 21 + 8n + -5n

Combine like terms: 8n + -5n = 3n
3 + 12n = 21 + 3n

Solving
3 + 12n = 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.
3 + 12n + -3n = 21 + 3n + -3n

Combine like terms: 12n + -3n = 9n
3 + 9n = 21 + 3n + -3n

Combine like terms: 3n + -3n = 0
3 + 9n = 21 + 0
3 + 9n = 21

Add '-3' to each side of the equation.
3 + -3 + 9n = 21 + -3

Combine like terms: 3 + -3 = 0
0 + 9n = 21 + -3
9n = 21 + -3

Combine like terms: 21 + -3 = 18
9n = 18

Divide each side by '9'.
n = 2

Simplifying
n = 2

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