3r-y=9

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Solution for 3r-y=9 equation: 


Simplifying
3r + -1y = 9

Solving
3r + -1y = 9

Solving for variable 'r'.

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

Add 'y' to each side of the equation.
3r + -1y + y = 9 + y

Combine like terms: -1y + y = 0
3r + 0 = 9 + y
3r = 9 + y

Divide each side by '3'.
r = 3 + 0.3333333333y

Simplifying
r = 3 + 0.3333333333y

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