n+21=42

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Solution for n+21=42 equation:


Simplifying
n + 21 = 42

Reorder the terms:
21 + n = 42

Solving
21 + n = 42

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 + n = 42 + -21

Combine like terms: 21 + -21 = 0
0 + n = 42 + -21
n = 42 + -21

Combine like terms: 42 + -21 = 21
n = 21

Simplifying
n = 21

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