y+x=3x+9y

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Solution for y+x=3x+9y equation:


Simplifying
y + x = 3x + 9y

Reorder the terms:
x + y = 3x + 9y

Solving
x + y = 3x + 9y

Solving for variable 'x'.

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

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

Combine like terms: x + -3x = -2x
-2x + y = 3x + -3x + 9y

Combine like terms: 3x + -3x = 0
-2x + y = 0 + 9y
-2x + y = 9y

Add '-1y' to each side of the equation.
-2x + y + -1y = 9y + -1y

Combine like terms: y + -1y = 0
-2x + 0 = 9y + -1y
-2x = 9y + -1y

Combine like terms: 9y + -1y = 8y
-2x = 8y

Divide each side by '-2'.
x = -4y

Simplifying
x = -4y

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