8-9-n=1

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Solution for 8-9-n=1 equation: 


Simplifying
8 + -9 + -1n = 1

Combine like terms: 8 + -9 = -1
-1 + -1n = 1

Solving
-1 + -1n = 1

Solving for variable 'n'.

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

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

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

Combine like terms: 1 + 1 = 2
-1n = 2

Divide each side by '-1'.
n = -2

Simplifying
n = -2

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