3n+21=x

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Solution for 3n+21=x equation: 


Simplifying
3n + 21 = x

Reorder the terms:
21 + 3n = x

Solving
21 + 3n = x

Solving for variable 'n'.

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

Add '-21' to each side of the equation.
21 + -21 + 3n = -21 + x

Combine like terms: 21 + -21 = 0
0 + 3n = -21 + x
3n = -21 + x

Divide each side by '3'.
n = -7 + 0.3333333333x

Simplifying
n = -7 + 0.3333333333x

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