Solving for Y in a given equation

headhurts

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Nov 13, 2005
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Help!!! The equation is x=3y/y+2
Could you please help? This is part of an inverse function problem. I have exchanged Xs and Ys and now must solve for Y.
 
x = 3y/y+2
x = 3 + 2 ...y =/= 0
x = 5

See what happens when you don't use brackets? Your 'y' variable dissapears.
We can't read minds, so please post your questions accurately. As i'm sure you mean this:

x = 3y/(y+2)

x(y+2) = 3y

xy + 2x = 3y

2x = 3y - xy

2x = y(3 - x)

y = 2x/(3 - x)
 
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