9n-21=27+3n

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Solution for 9n-21=27+3n equation:


Simplifying
9n + -21 = 27 + 3n

Reorder the terms:
-21 + 9n = 27 + 3n

Solving
-21 + 9n = 27 + 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 + 9n + -3n = 27 + 3n + -3n

Combine like terms: 9n + -3n = 6n
-21 + 6n = 27 + 3n + -3n

Combine like terms: 3n + -3n = 0
-21 + 6n = 27 + 0
-21 + 6n = 27

Add '21' to each side of the equation.
-21 + 21 + 6n = 27 + 21

Combine like terms: -21 + 21 = 0
0 + 6n = 27 + 21
6n = 27 + 21

Combine like terms: 27 + 21 = 48
6n = 48

Divide each side by '6'.
n = 8

Simplifying
n = 8

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