Xy-21=y-4x

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Solution for Xy-21=y-4x equation:


Simplifying
Xy + -21 = y + -4x

Reorder the terms:
-21 + yX = y + -4x

Reorder the terms:
-21 + yX = -4x + y

Solving
-21 + yX = -4x + y

Solving for variable 'y'.

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

Add '-1y' to each side of the equation.
-21 + -1y + yX = -4x + y + -1y

Combine like terms: y + -1y = 0
-21 + -1y + yX = -4x + 0
-21 + -1y + yX = -4x

Add '21' to each side of the equation.
-21 + -1y + 21 + yX = 21 + -4x

Reorder the terms:
-21 + 21 + -1y + yX = 21 + -4x

Combine like terms: -21 + 21 = 0
0 + -1y + yX = 21 + -4x
-1y + yX = 21 + -4x

Reorder the terms:
-21 + 4x + -1y + yX = 21 + -4x + -21 + 4x

Reorder the terms:
-21 + 4x + -1y + yX = 21 + -21 + -4x + 4x

Combine like terms: 21 + -21 = 0
-21 + 4x + -1y + yX = 0 + -4x + 4x
-21 + 4x + -1y + yX = -4x + 4x

Combine like terms: -4x + 4x = 0
-21 + 4x + -1y + yX = 0

The solution to this equation could not be determined.

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