Posted by **RORO** on Tuesday, October 7, 2008 at 11:47pm.

A bike shop has 8 red, 5 blue, 12 black, and 9 white bikes. Write an expression that shows how many more black bikes than red bikes there are.

- Gil -
**kelsey**, Wednesday, October 8, 2008 at 12:51am
12-8=4 more black bikes

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