4n+5n+15=12n

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Solution for 4n+5n+15=12n equation: 


Simplifying
4n + 5n + 15 = 12n

Reorder the terms:
15 + 4n + 5n = 12n

Combine like terms: 4n + 5n = 9n
15 + 9n = 12n

Solving
15 + 9n = 12n

Solving for variable 'n'.

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

Add '-12n' to each side of the equation.
15 + 9n + -12n = 12n + -12n

Combine like terms: 9n + -12n = -3n
15 + -3n = 12n + -12n

Combine like terms: 12n + -12n = 0
15 + -3n = 0

Add '-15' to each side of the equation.
15 + -15 + -3n = 0 + -15

Combine like terms: 15 + -15 = 0
0 + -3n = 0 + -15
-3n = 0 + -15

Combine like terms: 0 + -15 = -15
-3n = -15

Divide each side by '-3'.
n = 5

Simplifying
n = 5

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