-6+x+x-1=9

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Solution for -6+x+x-1=9 equation: 


Simplifying
-6 + x + x + -1 = 9

Reorder the terms:
-6 + -1 + x + x = 9

Combine like terms: -6 + -1 = -7
-7 + x + x = 9

Combine like terms: x + x = 2x
-7 + 2x = 9

Solving
-7 + 2x = 9

Solving for variable 'x'.

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

Add '7' to each side of the equation.
-7 + 7 + 2x = 9 + 7

Combine like terms: -7 + 7 = 0
0 + 2x = 9 + 7
2x = 9 + 7

Combine like terms: 9 + 7 = 16
2x = 16

Divide each side by '2'.
x = 8

Simplifying
x = 8

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