xy-4=0

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Solution for xy-4=0 equation: 


Simplifying
xy + -4 = 0

Reorder the terms:
-4 + xy = 0

Solving
-4 + xy = 0

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 + xy = 0 + 4

Combine like terms: -4 + 4 = 0
0 + xy = 0 + 4
xy = 0 + 4

Combine like terms: 0 + 4 = 4
xy = 4

Divide each side by 'y'.
x = 4y-1

Simplifying
x = 4y-1

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