ar+ar=9

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Solution for ar+ar=9 equation: 


Simplifying
ar + ar = 9

Combine like terms: ar + ar = 2ar
2ar = 9

Solving
2ar = 9

Solving for variable 'a'.

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

Divide each side by '2r'.
a = 4.5r-1

Simplifying
a = 4.5r-1

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