Question

Solve:
1/y = 2/y-1/5
the solution is ?

Answer 1

i got 5?????? is that right?????

Answer 2

Yes.

Answer 3

y=-5/2

Answer 4

You're incorrect, the inversion step is wrong:\[1/y=2/y-1/5\neq>y= y/2-5\]

Answer 5

\[{1 \over y}={2 \over y-{1 \over 5}} \implies y-{1 \over 5}=2y \implies y=-{1 \over 5}\]

Answer 6

I don't think that's the equation. From what she put, it should be:\[1/y=2/y-1/5\]Not:\[\frac{1}{y}=\frac{2}{y-1/5}\]

Answer 7

You're right. But I am pretty sure she meant what I wrote, because she did the same thing in another post.

Answer 8

Oh ok, it's just that the solution to the one I wrote is 5 so I thought it was probably that.

Answer 9

Well, she got two solutions. It's her job now to pick the one that answers her question :)