x+y-9=0

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Solution for x+y-9=0 equation:


Simplifying
x + y + -9 = 0

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

Solving
-9 + x + y = 0

Solving for variable 'x'.

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

Add '9' to each side of the equation.
-9 + x + 9 + y = 0 + 9

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

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

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

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

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

Simplifying
x = 9 + -1y

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