n+21+2n=6

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Solution for n+21+2n=6 equation:


Simplifying
n + 21 + 2n = 6

Reorder the terms:
21 + n + 2n = 6

Combine like terms: n + 2n = 3n
21 + 3n = 6

Solving
21 + 3n = 6

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 = 6 + -21

Combine like terms: 21 + -21 = 0
0 + 3n = 6 + -21
3n = 6 + -21

Combine like terms: 6 + -21 = -15
3n = -15

Divide each side by '3'.
n = -5

Simplifying
n = -5

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