Asked by Anna

Solve for x in each of the following:
A: 2/3 = x/18
B: 3/x = 3x/x^2

I think I have the first one. I am clueless on the second one! HELP!
Answered by I'llGiveHelp
Cross multiply to find x.
so...
3/x = 3x/x^2
--> (3*x^2) = (3x*x)
Now simplify.
Answered by Anna
I still don't get it, where do I simplify at? Fractions aren't my strong point.
Answered by Reiny
actually the 2nd is a strange one, as it has an infinite number of solutions

3/x = 3x/x^2
the right side simplifies to 3/x

so you have 3/x = 3/x, which of course is true for all values of x except x = 0
(remember, we can't divide by zero)

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