2n+12=31-3n

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Solution for 2n+12=31-3n equation:


Simplifying
2n + 12 = 31 + -3n

Reorder the terms:
12 + 2n = 31 + -3n

Solving
12 + 2n = 31 + -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 + 2n + 3n = 31 + -3n + 3n

Combine like terms: 2n + 3n = 5n
12 + 5n = 31 + -3n + 3n

Combine like terms: -3n + 3n = 0
12 + 5n = 31 + 0
12 + 5n = 31

Add '-12' to each side of the equation.
12 + -12 + 5n = 31 + -12

Combine like terms: 12 + -12 = 0
0 + 5n = 31 + -12
5n = 31 + -12

Combine like terms: 31 + -12 = 19
5n = 19

Divide each side by '5'.
n = 3.8

Simplifying
n = 3.8

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