5n-21=3n-5

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Solution for 5n-21=3n-5 equation: 


Simplifying
5n + -21 = 3n + -5

Reorder the terms:
-21 + 5n = 3n + -5

Reorder the terms:
-21 + 5n = -5 + 3n

Solving
-21 + 5n = -5 + 3n

Solving for variable 'n'.

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

Add '-3n' to each side of the equation.
-21 + 5n + -3n = -5 + 3n + -3n

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

Combine like terms: 3n + -3n = 0
-21 + 2n = -5 + 0
-21 + 2n = -5

Add '21' to each side of the equation.
-21 + 21 + 2n = -5 + 21

Combine like terms: -21 + 21 = 0
0 + 2n = -5 + 21
2n = -5 + 21

Combine like terms: -5 + 21 = 16
2n = 16

Divide each side by '2'.
n = 8

Simplifying
n = 8

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