25-n=4

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Solution for 25-n=4 equation: 


Simplifying
25 + -1n = 4

Solving
25 + -1n = 4

Solving for variable 'n'.

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

Add '-25' to each side of the equation.
25 + -25 + -1n = 4 + -25

Combine like terms: 25 + -25 = 0
0 + -1n = 4 + -25
-1n = 4 + -25

Combine like terms: 4 + -25 = -21
-1n = -21

Divide each side by '-1'.
n = 21

Simplifying
n = 21

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