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October 21, 2014

October 21, 2014

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

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?

- Algebra -
**Steve**, Sunday, January 5, 2014 at 6:40pmJust multiply everything in either of your equations by -1 to see that they are really the same equation.

2x = 4

is the same as

-2x = -4

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