2n-5n=21

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Solution for 2n-5n=21 equation: 


Simplifying
2n + -5n = 21

Combine like terms: 2n + -5n = -3n
-3n = 21

Solving
-3n = 21

Solving for variable 'n'.

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

Divide each side by '-3'.
n = -7

Simplifying
n = -7

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