3n-9=2n-12

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Solution for 3n-9=2n-12 equation:


Simplifying
3n + -9 = 2n + -12

Reorder the terms:
-9 + 3n = 2n + -12

Reorder the terms:
-9 + 3n = -12 + 2n

Solving
-9 + 3n = -12 + 2n

Solving for variable 'n'.

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

Add '-2n' to each side of the equation.
-9 + 3n + -2n = -12 + 2n + -2n

Combine like terms: 3n + -2n = 1n
-9 + 1n = -12 + 2n + -2n

Combine like terms: 2n + -2n = 0
-9 + 1n = -12 + 0
-9 + 1n = -12

Add '9' to each side of the equation.
-9 + 9 + 1n = -12 + 9

Combine like terms: -9 + 9 = 0
0 + 1n = -12 + 9
1n = -12 + 9

Combine like terms: -12 + 9 = -3
1n = -3

Divide each side by '1'.
n = -3

Simplifying
n = -3

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