X+x-1+x-1.5=20.5

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Solution for X+x-1+x-1.5=20.5 equation: 


Simplifying
X + x + -1 + x + -1.5 = 20.5

Reorder the terms:
-1 + -1.5 + X + x + x = 20.5

Combine like terms: -1 + -1.5 = -2.5
-2.5 + X + x + x = 20.5

Combine like terms: x + x = 2x
-2.5 + X + 2x = 20.5

Solving
-2.5 + X + 2x = 20.5

Solving for variable 'X'.

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

Add '2.5' to each side of the equation.
-2.5 + X + 2.5 + 2x = 20.5 + 2.5

Reorder the terms:
-2.5 + 2.5 + X + 2x = 20.5 + 2.5

Combine like terms: -2.5 + 2.5 = 0.0
0.0 + X + 2x = 20.5 + 2.5
X + 2x = 20.5 + 2.5

Combine like terms: 20.5 + 2.5 = 23
X + 2x = 23

Add '-2x' to each side of the equation.
X + 2x + -2x = 23 + -2x

Combine like terms: 2x + -2x = 0
X + 0 = 23 + -2x
X = 23 + -2x

Simplifying
X = 23 + -2x

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