9+3=n

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Solution for 9+3=n equation:


Simplifying
9 + 3 = n

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

Solving
12 = n

Solving for variable 'n'.

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

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

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

Add '-12' to each side of the equation.
12 + -12 + -1n = 0 + -12

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

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

Divide each side by '-1'.
n = 12

Simplifying
n = 12

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