9y-3x=90

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Solution for 9y-3x=90 equation: 


Simplifying
9y + -3x = 90

Reorder the terms:
-3x + 9y = 90

Solving
-3x + 9y = 90

Solving for variable 'x'.

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

Add '-9y' to each side of the equation.
-3x + 9y + -9y = 90 + -9y

Combine like terms: 9y + -9y = 0
-3x + 0 = 90 + -9y
-3x = 90 + -9y

Divide each side by '-3'.
x = -30 + 3y

Simplifying
x = -30 + 3y

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