X-a=b

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Solution for X-a=b equation: 


Simplifying
X + -1a = b

Solving
X + -1a = b

Solving for variable 'X'.

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

Add 'a' to each side of the equation.
X + -1a + a = a + b

Combine like terms: -1a + a = 0
X + 0 = a + b
X = a + b

Simplifying
X = a + b

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