12+5n=2n-9

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Solution for 12+5n=2n-9 equation:


Simplifying
12 + 5n = 2n + -9

Reorder the terms:
12 + 5n = -9 + 2n

Solving
12 + 5n = -9 + 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.
12 + 5n + -2n = -9 + 2n + -2n

Combine like terms: 5n + -2n = 3n
12 + 3n = -9 + 2n + -2n

Combine like terms: 2n + -2n = 0
12 + 3n = -9 + 0
12 + 3n = -9

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

Combine like terms: 12 + -12 = 0
0 + 3n = -9 + -12
3n = -9 + -12

Combine like terms: -9 + -12 = -21
3n = -21

Divide each side by '3'.
n = -7

Simplifying
n = -7

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