n-3=9-3n

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Solution for n-3=9-3n equation:


Simplifying
n + -3 = 9 + -3n

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

Solving
-3 + n = 9 + -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.
-3 + n + 3n = 9 + -3n + 3n

Combine like terms: n + 3n = 4n
-3 + 4n = 9 + -3n + 3n

Combine like terms: -3n + 3n = 0
-3 + 4n = 9 + 0
-3 + 4n = 9

Add '3' to each side of the equation.
-3 + 3 + 4n = 9 + 3

Combine like terms: -3 + 3 = 0
0 + 4n = 9 + 3
4n = 9 + 3

Combine like terms: 9 + 3 = 12
4n = 12

Divide each side by '4'.
n = 3

Simplifying
n = 3

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