xy+12y-(-3xy)=0

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Solution for xy+12y-(-3xy)=0 equation:


Simplifying
xy + 12y + -1(-3xy) = 0

Remove parenthesis around (-3xy)
xy + 12y + -1 * -3xy = 0

Multiply -1 * -3
xy + 12y + 3xy = 0

Reorder the terms:
xy + 3xy + 12y = 0

Combine like terms: xy + 3xy = 4xy
4xy + 12y = 0

Solving
4xy + 12y = 0

Solving for variable 'x'.

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

Add '-12y' to each side of the equation.
4xy + 12y + -12y = 0 + -12y

Combine like terms: 12y + -12y = 0
4xy + 0 = 0 + -12y
4xy = 0 + -12y
Remove the zero:
4xy = -12y

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

Simplifying
x = -3

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