capabilities of HP prime solver

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In "Apps" mode, select the Solve app and touch the "Save" soft-key. This brings up a dialog where you can enter the name of the new copy of the Solve app that will be created. You can created as many copies of the app as you need (within the limits of memory). Each will provide you with 10 equations. You can even change the Solve apps' icons to match the subject matter.

Personally, the Prime would be an excellent replacement for your 27s. It will cost you less than getting a replacement on eBay.
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Hi DrD this sounds promising and pretty much what I hoped for. Does this also work with the emulator?
SO I can have some subject and collect up to 10 equtions under that subject.
And those copies are easy accessible?