3n+n+-3=9

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Solution for 3n+n+-3=9 equation: 


Simplifying
3n + n + -3 = 9

Reorder the terms:
-3 + 3n + n = 9

Combine like terms: 3n + n = 4n
-3 + 4n = 9

Solving
-3 + 4n = 9

Solving for variable 'n'.

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

Add '3' to each side of the equation.
-3 + 3 + 4n = 9 + 3

Combine like terms: -3 + 3 = 0
0 + 4n = 9 + 3
4n = 9 + 3

Combine like terms: 9 + 3 = 12
4n = 12

Divide each side by '4'.
n = 3

Simplifying
n = 3

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