3y-12x=9

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Solution for 3y-12x=9 equation: 


Simplifying
3y + -12x = 9

Reorder the terms:
-12x + 3y = 9

Solving
-12x + 3y = 9

Solving for variable 'x'.

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

Add '-3y' to each side of the equation.
-12x + 3y + -3y = 9 + -3y

Combine like terms: 3y + -3y = 0
-12x + 0 = 9 + -3y
-12x = 9 + -3y

Divide each side by '-12'.
x = -0.75 + 0.25y

Simplifying
x = -0.75 + 0.25y

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