3y=21-9x

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Solution for 3y=21-9x equation: 


Simplifying
3y = 21 + -9x

Solving
3y = 21 + -9x

Solving for variable 'y'.

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

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

Simplifying
y = 7 + -3x

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