12y+9x=-x-y

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Solution for 12y+9x=-x-y equation:


Simplifying
12y + 9x = -1x + -1y

Reorder the terms:
9x + 12y = -1x + -1y

Solving
9x + 12y = -1x + -1y

Solving for variable 'x'.

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

Add 'x' to each side of the equation.
9x + x + 12y = -1x + x + -1y

Combine like terms: 9x + x = 10x
10x + 12y = -1x + x + -1y

Combine like terms: -1x + x = 0
10x + 12y = 0 + -1y
10x + 12y = -1y

Add '-12y' to each side of the equation.
10x + 12y + -12y = -1y + -12y

Combine like terms: 12y + -12y = 0
10x + 0 = -1y + -12y
10x = -1y + -12y

Combine like terms: -1y + -12y = -13y
10x = -13y

Divide each side by '10'.
x = -1.3y

Simplifying
x = -1.3y

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