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#1 Re: Help Me ! » 3x+5y=15 » 2008-12-17 04:09:20

No, x & y are a undefined number, thanks to you Daniel, I may not fail my math test tomorrow. But don't you need to divide out the 3?

#2 Re: Help Me ! » 3x+5y=15 » 2008-12-17 02:51:47

So, subtract 3x from both sides to solve for x? 5y=15-3y?

#3 Help Me ! » 3x+5y=15 » 2008-12-17 02:11:47

Don Ventresca
Replies: 5

Yes, a relatively simple problem (as said by my math teacher) but I can't figure out the formula/our teacher thought we would know this from 7th grade. (which I don't)

If someone could explain the formula for this sort of problem, it would greatly be appreciated.

Oh and I'm new here.

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