3n-9+9n=9+10n

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Solution for 3n-9+9n=9+10n equation:


Simplifying
3n + -9 + 9n = 9 + 10n

Reorder the terms:
-9 + 3n + 9n = 9 + 10n

Combine like terms: 3n + 9n = 12n
-9 + 12n = 9 + 10n

Solving
-9 + 12n = 9 + 10n

Solving for variable 'n'.

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

Add '-10n' to each side of the equation.
-9 + 12n + -10n = 9 + 10n + -10n

Combine like terms: 12n + -10n = 2n
-9 + 2n = 9 + 10n + -10n

Combine like terms: 10n + -10n = 0
-9 + 2n = 9 + 0
-9 + 2n = 9

Add '9' to each side of the equation.
-9 + 9 + 2n = 9 + 9

Combine like terms: -9 + 9 = 0
0 + 2n = 9 + 9
2n = 9 + 9

Combine like terms: 9 + 9 = 18
2n = 18

Divide each side by '2'.
n = 9

Simplifying
n = 9

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