SOLUTION: When two times a number decreased by 3, the result is 9 How do I write this in an equation and then solve the equation?

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Question 1185612: When two times a number decreased by 3, the result is 9
How do I write this in an equation and then solve the equation?
Answer by josgarithmetic(39620) About Me  (Show Source):
You can put this solution on YOUR website!
Just write exactly according to what is stated.

"a number", r
2r-3=9


Actually the description is not clear.
two times a number decreased by 3?
2r-3 ?
or
2%28r-3%29 ?