Question: Trouble using Maple 12

I'm having a lot of problems figuring out how to use Maple. I've watched all of the tutorial videos but they arent much help and there are no step by step directions, or templates, that show you how to solve the problems for my Linear algebra class. Here is the problem:

2x-3y+4z =-12



Could someone please quicky walk me through the steps needed to solve this problem? Thanks a lot.

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