x+y=y-3(y+4)

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Solution for x+y=y-3(y+4) equation:


Simplifying
x + y = y + -3(y + 4)

Reorder the terms:
x + y = y + -3(4 + y)
x + y = y + (4 * -3 + y * -3)
x + y = y + (-12 + -3y)

Reorder the terms:
x + y = -12 + y + -3y

Combine like terms: y + -3y = -2y
x + y = -12 + -2y

Solving
x + y = -12 + -2y

Solving for variable 'x'.

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

Add '-1y' to each side of the equation.
x + y + -1y = -12 + -2y + -1y

Combine like terms: y + -1y = 0
x + 0 = -12 + -2y + -1y
x = -12 + -2y + -1y

Combine like terms: -2y + -1y = -3y
x = -12 + -3y

Simplifying
x = -12 + -3y

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