Answer:
21 11/12
Step-by-step explanation:
5 2/3 + 7 1/2 + 8 3/4 =
The common denominator is 12
5 2/3 = 5 2/3*4/4 = 5 8/12
7 1/2 * 6/6 = 7 6/12
8 3/4 * 3/3 = 8 9/12
I like to line them up vertically
5 8/12
7 6/12
8 9/12
--------------
20 23/12
But the last is an improper fraction
12 goes into 23 1 time 23-12 =11
with 11 left over
20 + 1 11/12
21 11/12
