Oh oops. I did the same thing but I forgot to find what t is... Thanks!
...
You have to get rid of the dollars signs and only copy and paste the latex part to the latex box thing.
Ok thanks for telling me.
So basically you just have to factor out the common factors on both the denominator or numberstor then cancel them out.
hope this helps!
For 3, I got 12/29. Please point out any mistakes I might have made. Thanks,
+82 
