12n-2n-7n=15

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Solution for 12n-2n-7n=15 equation: 


Simplifying
12n + -2n + -7n = 15

Combine like terms: 12n + -2n = 10n
10n + -7n = 15

Combine like terms: 10n + -7n = 3n
3n = 15

Solving
3n = 15

Solving for variable 'n'.

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

Divide each side by '3'.
n = 5

Simplifying
n = 5

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