9+3=3n

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Solution for 9+3=3n equation:


Simplifying
9 + 3 = 3n

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

Solving
12 = 3n

Solving for variable 'n'.

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

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

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

Add '-12' to each side of the equation.
12 + -12 + -3n = 0 + -12

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

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

Divide each side by '-3'.
n = 4

Simplifying
n = 4

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