r*2=9

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Solution for r*2=9 equation: 


Simplifying
r * 2 = 9

Reorder the terms for easier multiplication:
2r = 9

Solving
2r = 9

Solving for variable 'r'.

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

Divide each side by '2'.
r = 4.5

Simplifying
r = 4.5

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