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August 21, 2014

August 21, 2014

Posted by **Amanda** on Wednesday, November 11, 2009 at 1:56pm.

2r-5s=-33

5r+2s=48

I keep getting different answers... I can never get these right.... so first I multiply the first equation by 2 and the second by 5?

- math -
**Amanda**, Wednesday, November 11, 2009 at 1:59pmcan someone please check my answer?

the answer I got was s= -69/-21 or 3.28

- math -
**zorro**, Thursday, November 12, 2009 at 11:41amBy what can you multiply that would cause one of the variable letters to drop out? Positive 10 of whatever plus negative 10 of whatever else would do the job. Your first inclination was pretty much right on the money. Make sure to multiply whatever you use all the way across.

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