X+xy+y=21

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Solution for X+xy+y=21 equation:


Simplifying
X + xy + y = 21

Solving
X + xy + y = 21

Solving for variable 'X'.

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

Add '-1xy' to each side of the equation.
X + xy + -1xy + y = 21 + -1xy

Combine like terms: xy + -1xy = 0
X + 0 + y = 21 + -1xy
X + y = 21 + -1xy

Add '-1y' to each side of the equation.
X + y + -1y = 21 + -1xy + -1y

Combine like terms: y + -1y = 0
X + 0 = 21 + -1xy + -1y
X = 21 + -1xy + -1y

Simplifying
X = 21 + -1xy + -1y

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