(n+3)=4n+12

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Solution for (n+3)=4n+12 equation:


Simplifying
(n + 3) = 4n + 12

Reorder the terms:
(3 + n) = 4n + 12

Remove parenthesis around (3 + n)
3 + n = 4n + 12

Reorder the terms:
3 + n = 12 + 4n

Solving
3 + n = 12 + 4n

Solving for variable 'n'.

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

Add '-4n' to each side of the equation.
3 + n + -4n = 12 + 4n + -4n

Combine like terms: n + -4n = -3n
3 + -3n = 12 + 4n + -4n

Combine like terms: 4n + -4n = 0
3 + -3n = 12 + 0
3 + -3n = 12

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

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

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

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

Simplifying
n = -3

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