9=x-y

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Solution for 9=x-y equation:


Simplifying
9 = x + -1y

Solving
9 = x + -1y

Solving for variable 'x'.

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

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

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

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

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

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

Simplifying
x = 9 + y

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