15+n+n+n=51-n-n-n

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Solution for 15+n+n+n=51-n-n-n equation:


Simplifying
15 + n + n + n = 51 + -1n + -1n + -1n

Combine like terms: n + n = 2n
15 + 2n + n = 51 + -1n + -1n + -1n

Combine like terms: 2n + n = 3n
15 + 3n = 51 + -1n + -1n + -1n

Combine like terms: -1n + -1n = -2n
15 + 3n = 51 + -2n + -1n

Combine like terms: -2n + -1n = -3n
15 + 3n = 51 + -3n

Solving
15 + 3n = 51 + -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.
15 + 3n + 3n = 51 + -3n + 3n

Combine like terms: 3n + 3n = 6n
15 + 6n = 51 + -3n + 3n

Combine like terms: -3n + 3n = 0
15 + 6n = 51 + 0
15 + 6n = 51

Add '-15' to each side of the equation.
15 + -15 + 6n = 51 + -15

Combine like terms: 15 + -15 = 0
0 + 6n = 51 + -15
6n = 51 + -15

Combine like terms: 51 + -15 = 36
6n = 36

Divide each side by '6'.
n = 6

Simplifying
n = 6

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