12=2-n-4n

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Solution for 12=2-n-4n equation:


Simplifying
12 = 2 + -1n + -4n

Combine like terms: -1n + -4n = -5n
12 = 2 + -5n

Solving
12 = 2 + -5n

Solving for variable 'n'.

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

Add '5n' to each side of the equation.
12 + 5n = 2 + -5n + 5n

Combine like terms: -5n + 5n = 0
12 + 5n = 2 + 0
12 + 5n = 2

Add '-12' to each side of the equation.
12 + -12 + 5n = 2 + -12

Combine like terms: 12 + -12 = 0
0 + 5n = 2 + -12
5n = 2 + -12

Combine like terms: 2 + -12 = -10
5n = -10

Divide each side by '5'.
n = -2

Simplifying
n = -2

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