18+18-9=n

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Solution for 18+18-9=n equation:


Simplifying
18 + 18 + -9 = n

Combine like terms: 18 + 18 = 36
36 + -9 = n

Combine like terms: 36 + -9 = 27
27 = n

Solving
27 = n

Solving for variable 'n'.

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

Add '-1n' to each side of the equation.
27 + -1n = n + -1n

Combine like terms: n + -1n = 0
27 + -1n = 0

Add '-27' to each side of the equation.
27 + -27 + -1n = 0 + -27

Combine like terms: 27 + -27 = 0
0 + -1n = 0 + -27
-1n = 0 + -27

Combine like terms: 0 + -27 = -27
-1n = -27

Divide each side by '-1'.
n = 27

Simplifying
n = 27

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