n-15n=3-12n-9

Solution for n-15n=3-12n-9 equation:

Simplifying
n + -15n = 3 + -12n + -9

Combine like terms: n + -15n = -14n
-14n = 3 + -12n + -9

Reorder the terms:
-14n = 3 + -9 + -12n

Combine like terms: 3 + -9 = -6
-14n = -6 + -12n

Solving
-14n = -6 + -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.
-14n + 12n = -6 + -12n + 12n

Combine like terms: -14n + 12n = -2n
-2n = -6 + -12n + 12n

Combine like terms: -12n + 12n = 0
-2n = -6 + 0
-2n = -6

Divide each side by '-2'.
n = 3

Simplifying
n = 3