X-y-1=a

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Solution for X-y-1=a equation: 


Simplifying
X + -1y + -1 = a

Reorder the terms:
-1 + X + -1y = a

Solving
-1 + X + -1y = a

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 + -1y = 1 + a

Reorder the terms:
-1 + 1 + X + -1y = 1 + a

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

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

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

Simplifying
X = 1 + a + y

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