What is #9/57 -: 8/23#?
think of it this way
how? well think it isn't really easy to explain it while typing however I have linked a video from YouTube where some one will explain it to you.
however the very simple trick is to flip the divider and turn the divide sign into multiply.
NOTE: the divider is the one to the right of the divide sign.
Hope this helped
First note that
Now apply the rule that when you divide by a reaction, you multiply by the inverted fraction. Thus
And then multiply the fractions as you ordinarily would: