1+n=21

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Solution for 1+n=21 equation: 


Simplifying
1 + n = 21

Solving
1 + n = 21

Solving for variable 'n'.

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

Add '-1' to each side of the equation.
1 + -1 + n = 21 + -1

Combine like terms: 1 + -1 = 0
0 + n = 21 + -1
n = 21 + -1

Combine like terms: 21 + -1 = 20
n = 20

Simplifying
n = 20

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