7x+xy=xy+21

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Solution for 7x+xy=xy+21 equation: 


Simplifying
7x + xy = xy + 21

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

Add '-1xy' to each side of the equation.
7x + xy + -1xy = 21 + xy + -1xy

Combine like terms: xy + -1xy = 0
7x + 0 = 21 + xy + -1xy
7x = 21 + xy + -1xy

Combine like terms: xy + -1xy = 0
7x = 21 + 0
7x = 21

Solving
7x = 21

Solving for variable 'x'.

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

Divide each side by '7'.
x = 3

Simplifying
x = 3

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