X+X-1=

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Solution for X+X-1= equation: 


Simplifying
X + X + -1 = 0

Reorder the terms:
-1 + X + X = 0

Combine like terms: X + X = 2X
-1 + 2X = 0

Solving
-1 + 2X = 0

Solving for variable 'X'.

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

Add '1' to each side of the equation.
-1 + 1 + 2X = 0 + 1

Combine like terms: -1 + 1 = 0
0 + 2X = 0 + 1
2X = 0 + 1

Combine like terms: 0 + 1 = 1
2X = 1

Divide each side by '2'.
X = 0.5

Simplifying
X = 0.5

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