4n-5n=21

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Solution for 4n-5n=21 equation: 


Simplifying
4n + -5n = 21

Combine like terms: 4n + -5n = -1n
-1n = 21

Solving
-1n = 21

Solving for variable 'n'.

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

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

Simplifying
n = -21

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