x+x-1=25

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Solution for x+x-1=25 equation: 


Simplifying
x + x + -1 = 25

Reorder the terms:
-1 + x + x = 25

Combine like terms: x + x = 2x
-1 + 2x = 25

Solving
-1 + 2x = 25

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 = 25 + 1

Combine like terms: -1 + 1 = 0
0 + 2x = 25 + 1
2x = 25 + 1

Combine like terms: 25 + 1 = 26
2x = 26

Divide each side by '2'.
x = 13

Simplifying
x = 13

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