3 ½ - 2 ⅓

Give your answer as a improper fraction

first change them into improper fractions

(2*3) + 1/2 - ->7/2

(3*1) + 1/2--> 7/3

7/2-7/3 now find the least common denominator (lcd) it is 6

2 goes into 6, 3 times, 7*3 = 21--> 21/6

3 goes into 6, 2 times, 7*2=14 - -> 14/6

21/6-14/6=7/6