15n=12n-21

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Solution for 15n=12n-21 equation: 


Simplifying
15n = 12n + -21

Reorder the terms:
15n = -21 + 12n

Solving
15n = -21 + 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.
15n + -12n = -21 + 12n + -12n

Combine like terms: 15n + -12n = 3n
3n = -21 + 12n + -12n

Combine like terms: 12n + -12n = 0
3n = -21 + 0
3n = -21

Divide each side by '3'.
n = -7

Simplifying
n = -7

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