x-1+x=13

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Solution for x-1+x=13 equation: 


Simplifying
x + -1 + x = 13

Reorder the terms:
-1 + x + x = 13

Combine like terms: x + x = 2x
-1 + 2x = 13

Solving
-1 + 2x = 13

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 = 13 + 1

Combine like terms: -1 + 1 = 0
0 + 2x = 13 + 1
2x = 13 + 1

Combine like terms: 13 + 1 = 14
2x = 14

Divide each side by '2'.
x = 7

Simplifying
x = 7

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