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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)
 
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