2n+15=84-n

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Solution for 2n+15=84-n equation:


Simplifying
2n + 15 = 84 + -1n

Reorder the terms:
15 + 2n = 84 + -1n

Solving
15 + 2n = 84 + -1n

Solving for variable 'n'.

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

Add 'n' to each side of the equation.
15 + 2n + n = 84 + -1n + n

Combine like terms: 2n + n = 3n
15 + 3n = 84 + -1n + n

Combine like terms: -1n + n = 0
15 + 3n = 84 + 0
15 + 3n = 84

Add '-15' to each side of the equation.
15 + -15 + 3n = 84 + -15

Combine like terms: 15 + -15 = 0
0 + 3n = 84 + -15
3n = 84 + -15

Combine like terms: 84 + -15 = 69
3n = 69

Divide each side by '3'.
n = 23

Simplifying
n = 23

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