Answer:
43 3/4
Explanation:
You need to subtract 78 21/100 by 34 23/50. The first thing you do is convert the mixed number into a improper fraction. Your equation would know read 7821/100 - 1723/50. So now you just subract the fractions, whichs leaves you with 1745/4 and hat siplifies to 43 3/4
