algebra 1 part a

rebelpride22 · #1 Oct 15, 2009, 10:51 AM

how do you figure out what x is if you have so many other variables?

rebelpride22 · Oct 15, 2009, 10:52 AM

like this question:
x+yover c =d

Unknown008 · Oct 15, 2009, 11:03 AM

Well, we cannot tell the actual value of x, but we can make an equation where we have x in terms of the other variables, in your case. If, however, we happen to have other equations containing the variables concerned, we might get the actual value of x.

Ok, here's how you get x in terms of the other variables:

$x + \frac{y}{c} = d$

subtract y/c from both sides:

$x \cancel{+ \frac{y}{c} - \frac{y}{c}}= d- \frac{y}{c}$

The part which I crossed becomes zero, so;

$x = d- \frac{y}{c}$

I hope this helped!

morgaine300 · Oct 16, 2009, 09:18 PM

Apparently I haven't been spreading any rep... LOL. But I'm impressed that you understood what the question meant. :-)

Unknown008 · Oct 17, 2009, 08:27 AM

I haven't actually, morgaine... I guess the question was asking that...

That's ok, I try to visit other sections of AMHD and look for posts 'worthy' of greenies, and there I spread my reps!



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