y(x-7)+x=21

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Solution for y(x-7)+x=21 equation: 


Simplifying
y(x + -7) + x = 21

Reorder the terms:
y(-7 + x) + x = 21
(-7 * y + x * y) + x = 21

Reorder the terms:
(xy + -7y) + x = 21
(xy + -7y) + x = 21

Reorder the terms:
x + xy + -7y = 21

Solving
x + xy + -7y = 21

Solving for variable 'x'.

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

Add '7y' to each side of the equation.
x + xy + -7y + 7y = 21 + 7y

Combine like terms: -7y + 7y = 0
x + xy + 0 = 21 + 7y
x + xy = 21 + 7y

Reorder the terms:
-21 + x + xy + -7y = 21 + 7y + -21 + -7y

Reorder the terms:
-21 + x + xy + -7y = 21 + -21 + 7y + -7y

Combine like terms: 21 + -21 = 0
-21 + x + xy + -7y = 0 + 7y + -7y
-21 + x + xy + -7y = 7y + -7y

Combine like terms: 7y + -7y = 0
-21 + x + xy + -7y = 0

The solution to this equation could not be determined.

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