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

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


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

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

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

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

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

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

Divide each side by '12'.
x = -1y

Simplifying
x = -1y

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