X+(x-1)=12

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Solution for X+(x-1)=12 equation:


Simplifying
X + (x + -1) = 12

Reorder the terms:
X + (-1 + x) = 12

Remove parenthesis around (-1 + x)
X + -1 + x = 12

Reorder the terms:
-1 + X + x = 12

Solving
-1 + X + x = 12

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 + X + 1 + x = 12 + 1

Reorder the terms:
-1 + 1 + X + x = 12 + 1

Combine like terms: -1 + 1 = 0
0 + X + x = 12 + 1
X + x = 12 + 1

Combine like terms: 12 + 1 = 13
X + x = 13

Add '-1x' to each side of the equation.
X + x + -1x = 13 + -1x

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

Simplifying
X = 13 + -1x

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