21+2n=

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Solution for 21+2n= equation: 


Simplifying
21 + 2n = 0

Solving
21 + 2n = 0

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 + 2n = 0 + -21

Combine like terms: 21 + -21 = 0
0 + 2n = 0 + -21
2n = 0 + -21

Combine like terms: 0 + -21 = -21
2n = -21

Divide each side by '2'.
n = -10.5

Simplifying
n = -10.5

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