First for both of these questions you want to convert the mixed number into an improper fraction. Then if there isn't a common denominator, you find one (GCD). To do this you look for the smallest number that both denominators can be multiplied by some number to get to Once found you multiply the numerator and the denominator by the number that will get you to that greatest common denominator! After that, you add or subtract and then convert the improper fraction back to a mixed number if needed!
1.)
5 2/3 = 17/3
4 5/9 = 41/9
GCD = 9
17/3 * 3/3 = 51/9
So we have 51/9 - 41/9
51 - 41 = 10 so your final answer is
10/9 or 1 1/9
2.)
6 1/3 = 19/3
2 1/3 = 7/3
GCD - Alrady the same so you skip this...
We have 19/3 - 7/3
19 - 7 = 12 so we have a final answer of
12/3 or 4yd
Hope this helps!