Saturday
August 2, 2014

Homework Help: Algebra

Posted by Anonymous on Sunday, January 5, 2014 at 4:59pm.

I'm asked to solve the following system using elimination and say how many solutions there are:

4x - 7y = 15
-8x + 14y = -30

The answer says that there are infinitely many solutions, but I am getting 8x - 14y = 30 and -8x + 14y = -30. I think they both come up as 30 and -30, so they aren't the same. Could someone please explain how to do this?

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