9-2x-1=15

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Solution for 9-2x-1=15 equation: 


Simplifying
9 + -2x + -1 = 15

Reorder the terms:
9 + -1 + -2x = 15

Combine like terms: 9 + -1 = 8
8 + -2x = 15

Solving
8 + -2x = 15

Solving for variable 'x'.

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

Add '-8' to each side of the equation.
8 + -8 + -2x = 15 + -8

Combine like terms: 8 + -8 = 0
0 + -2x = 15 + -8
-2x = 15 + -8

Combine like terms: 15 + -8 = 7
-2x = 7

Divide each side by '-2'.
x = -3.5

Simplifying
x = -3.5

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