Question

change so x is the subject

y=2/x

and

y=-n/x
the minus is for the whole fraction

please show your working

thanks in advance :)

Answer 1

Was this the question you had in
http://www.jiskha.com/display.cgi?id=1256992665 ??

Well, the way you phrased it now makes it so much easier ...

y = 2/x
multiply by x
xy = 2
divide by y
x = 2/y

do the same for the second part.