6y-3x=21

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Solution for 6y-3x=21 equation: 


Simplifying
6y + -3x = 21

Reorder the terms:
-3x + 6y = 21

Solving
-3x + 6y = 21

Solving for variable 'x'.

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

Add '-6y' to each side of the equation.
-3x + 6y + -6y = 21 + -6y

Combine like terms: 6y + -6y = 0
-3x + 0 = 21 + -6y
-3x = 21 + -6y

Divide each side by '-3'.
x = -7 + 2y

Simplifying
x = -7 + 2y

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