x+(-3y)+9=0

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Solution for x+(-3y)+9=0 equation:


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

Reorder the terms:
9 + x + (-3y) = 0

Solving
9 + x + (-3y) = 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 + (-3y) = 0 + -9

Reorder the terms:
9 + -9 + x + (-3y) = 0 + -9

Combine like terms: 9 + -9 = 0
0 + x + (-3y) = 0 + -9
x + (-3y) = 0 + -9

Combine like terms: 0 + -9 = -9
x + (-3y) = -9

Add '(3y)' to each side of the equation.
x + (-3y) + (3y) = -9 + (3y)

Combine like terms: (-3y) + (3y) = 0
x + 0 = -9 + (3y)
x = -9 + (3y)

Simplifying
x = -9 + (3y)

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