Free DAT Tutorial offered by Prometric

This forum made possible through the generous support of SDN members, donors, and sponsors. Thank you.
Does the calculator look like that or is it just my screen...?
Calculator.png
 
I feel like I am completely blanking on the QR sample question. Can someone post the step by step solution for it?
If y = (x + 2)/x, than x equals ...?
 
I feel like I am completely blanking on the QR sample question. Can someone post the step by step solution for it?
If y = (x + 2)/x, than x equals ...?

y=(x+2)/x
cross multiply to get: yx = x + 2
move x to the left side and you get : yx - x = 2
factor out and x: x(y - 1 ) = 2
and finally divide to get:

x = 2/(y - 1)
 
Top