x*y-3*y=4

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Solution for x*y-3*y=4 equation: 


Simplifying
x * y + -3y = 4

Multiply x * y
xy + -3y = 4

Solving
xy + -3y = 4

Solving for variable 'x'.

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

Add '3y' to each side of the equation.
xy + -3y + 3y = 4 + 3y

Combine like terms: -3y + 3y = 0
xy + 0 = 4 + 3y
xy = 4 + 3y

Divide each side by 'y'.
x = 4y-1 + 3

Simplifying
x = 4y-1 + 3

Reorder the terms:
x = 3 + 4y-1

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