9=23-2n

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Solution for 9=23-2n equation:


Simplifying
9 = 23 + -2n

Solving
9 = 23 + -2n

Solving for variable 'n'.

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

Add '2n' to each side of the equation.
9 + 2n = 23 + -2n + 2n

Combine like terms: -2n + 2n = 0
9 + 2n = 23 + 0
9 + 2n = 23

Add '-9' to each side of the equation.
9 + -9 + 2n = 23 + -9

Combine like terms: 9 + -9 = 0
0 + 2n = 23 + -9
2n = 23 + -9

Combine like terms: 23 + -9 = 14
2n = 14

Divide each side by '2'.
n = 7

Simplifying
n = 7

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