-x-y=-9

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Solution for -x-y=-9 equation: 


Simplifying
-1x + -1y = -9

Solving
-1x + -1y = -9

Solving for variable 'x'.

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

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

Combine like terms: -1y + y = 0
-1x + 0 = -9 + y
-1x = -9 + y

Divide each side by '-1'.
x = 9 + -1y

Simplifying
x = 9 + -1y

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