2-2n-1=9

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Solution for 2-2n-1=9 equation: 


Simplifying
2 + -2n + -1 = 9

Reorder the terms:
2 + -1 + -2n = 9

Combine like terms: 2 + -1 = 1
1 + -2n = 9

Solving
1 + -2n = 9

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 + -2n = 9 + -1

Combine like terms: 1 + -1 = 0
0 + -2n = 9 + -1
-2n = 9 + -1

Combine like terms: 9 + -1 = 8
-2n = 8

Divide each side by '-2'.
n = -4

Simplifying
n = -4

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