2*n+21=25

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Solution for 2*n+21=25 equation: 


Simplifying
2n + 21 = 25

Reorder the terms:
21 + 2n = 25

Solving
21 + 2n = 25

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 = 25 + -21

Combine like terms: 21 + -21 = 0
0 + 2n = 25 + -21
2n = 25 + -21

Combine like terms: 25 + -21 = 4
2n = 4

Divide each side by '2'.
n = 2

Simplifying
n = 2

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