x-4=y

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Solution for x-4=y equation: 


Simplifying
x + -4 = y

Reorder the terms:
-4 + x = y

Solving
-4 + x = y

Solving for variable 'x'.

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

Add '4' to each side of the equation.
-4 + 4 + x = 4 + y

Combine like terms: -4 + 4 = 0
0 + x = 4 + y
x = 4 + y

Simplifying
x = 4 + y

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