-6n+21n=12n-15

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Solution for -6n+21n=12n-15 equation:


Simplifying
-6n + 21n = 12n + -15

Combine like terms: -6n + 21n = 15n
15n = 12n + -15

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

Solving
15n = -15 + 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 = -15 + 12n + -12n

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

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

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

Simplifying
n = -5

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