6+3xn=18

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Solution for 6+3xn=18 equation: 


Simplifying
6 + 3xn = 18

Solving
6 + 3nx = 18

Solving for variable 'n'.

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

Add '-6' to each side of the equation.
6 + -6 + 3nx = 18 + -6

Combine like terms: 6 + -6 = 0
0 + 3nx = 18 + -6
3nx = 18 + -6

Combine like terms: 18 + -6 = 12
3nx = 12

Divide each side by '3x'.
n = 4x-1

Simplifying
n = 4x-1

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