Quote - degF = (9/5) * degC + 32; degC = (degF - 32) * (5/9)

9/5 = 1 / (5/9) = 2 / (10/9) = 2 * (9/10)

degF = (degC -degC/10) * 2 + 32

x = (degF - 32); degC = (x + x/9)  /  2

Or you could just use this calculator :)

http://www.eskimo.com/~jet/javascript/convert.html

I don't understand Fahrenheit temperatures at all anymore.

I don't understand why the USA doesn't follow the rest of the world and go metric.  It's much easier.

"It is good to see ourselves as others see us. Try as we may, we are never
able to know ourselves fully as we are, especially the evil side of us.
This we can do only if we are not angry with our critics but will take in good
heart whatever they might have to say." - Ghandi