X+x-1-2x-1=18

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Solution for X+x-1-2x-1=18 equation:


Simplifying
X + x + -1 + -2x + -1 = 18

Reorder the terms:
-1 + -1 + X + x + -2x = 18

Combine like terms: -1 + -1 = -2
-2 + X + x + -2x = 18

Combine like terms: x + -2x = -1x
-2 + X + -1x = 18

Solving
-2 + X + -1x = 18

Solving for variable 'X'.

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

Add '2' to each side of the equation.
-2 + X + 2 + -1x = 18 + 2

Reorder the terms:
-2 + 2 + X + -1x = 18 + 2

Combine like terms: -2 + 2 = 0
0 + X + -1x = 18 + 2
X + -1x = 18 + 2

Combine like terms: 18 + 2 = 20
X + -1x = 20

Add 'x' to each side of the equation.
X + -1x + x = 20 + x

Combine like terms: -1x + x = 0
X + 0 = 20 + x
X = 20 + x

Simplifying
X = 20 + x

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