Find the difference. simplify completely. show work.1. 7/9 - 3/8 2. 5 4/5 - 2 1/4

1. 7/9 - 3/8 = (7·8 - 9·3)/(9·8) = (56 -27)/72 = 29/72

2. (5 4/5) - (2 1/4) = (5 - 2) + (4/5 - 1/4) = 3 + (4·4 -5·1)/(5·4) = 3 11/20

(a/b) -(c/d) = (ad -bc)/(bd) . . . . a useful formula to remember when working problems like this. It is equivalent to multiplying the first fraction by d/d and the second one by b/b to get a common denominator of bd. Of course if the second fraction is added instead of subtracted, the sign changes in both places.

this doesn't make sense lol

if you are looking for the unit rate then the answer would be 9 because unit rate is distance divided by time.

step-by-step explanation: