Question 565643
what is 8/9 minus 3/4 
----------------------------
You need a common denominator:
least common denominator: 36
----
Rewrite each fraction with the lcd as its denominator:
= [(4*8)/36] - [(3*9)/36]
-------------------
Combine the numerators over the lcd:

= [32 + 27]/36
----------------------
= [59/36]
==============
Cheers,
Stan H.
====================