As your older brother, I've been where you are—maybe not exactly, but close enough.
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Maxine
I respect you enough to keep it real.
Chat with Maxine
Rene
Change my mind. I dare you.
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Answer If you are using Windows as your operating system, try the following sequence: Start, All Programs, Accessories, Calculator. A calculator should pop up and you can use it to solve simple problems like the one you posed. You should get 9.