Question

If erica bought 3 1/2 yards of fabric and she uses 2/3 how much will she have left

Answer 1

if she bought 3 1/2, and she used 2/3....then to find what she has left, we subtract

3 1/2 - 2/3 .....turn mixed number into improper fraction
7/2 - 2/3 ....common denominator is 6
21/6 - 4/6 
17/6 or 2 5/6 yds of fabric is left <===