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

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Solution for 9(x+y)-3(x-y)= equation:


Simplifying
9(x + y) + -3(x + -1y) = 0
(x * 9 + y * 9) + -3(x + -1y) = 0
(9x + 9y) + -3(x + -1y) = 0
9x + 9y + (x * -3 + -1y * -3) = 0
9x + 9y + (-3x + 3y) = 0

Reorder the terms:
9x + -3x + 9y + 3y = 0

Combine like terms: 9x + -3x = 6x
6x + 9y + 3y = 0

Combine like terms: 9y + 3y = 12y
6x + 12y = 0

Solving
6x + 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.
6x + 12y + -12y = 0 + -12y

Combine like terms: 12y + -12y = 0
6x + 0 = 0 + -12y
6x = 0 + -12y
Remove the zero:
6x = -12y

Divide each side by '6'.
x = -2y

Simplifying
x = -2y

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