I haven't done any algebra in years and I need to solve the following equation for x. Can anyone help me, or at least tell me how to go about it.
237.7y + xy - 7.5x = 0
Hi there, if solving x in terms of y you need to isolate the terms that contain x on one side & factor the x out.
Here's one similar to your equation that I prepared earlier, model the steps from here and your's should be a piece of cake (hopefully chocolate cake)
$\displaystyle 5y + xy -2x = 0 $
leaving the x terms on the LHS
$\displaystyle xy -2x = -5y $
Factor out the x
$\displaystyle x(y -2) = -5y $
divide the other factor over to the RHS and bingo!
$\displaystyle x = \frac{-5y}{y-2} $
well. I feel obligated to put the final solution, now that you understand the problem :P
ok.
$\displaystyle xy-7.5x=-237.7y$
$\displaystyle x(y-7.5)=-237.7y$
$\displaystyle x=\frac{-237.7y}{y-7.5}$
well. there you go. Hope i didn't make a mistake