1 1/8 because 3/4 us equivalent to 6/8, so from there you can add 3/8 with 6/8 because they share a common denominator. (remember, you cannot add 2 fractions with different denominators.) This will get you to an improper fraction of 9/8. To simplify this you divide 9 by 8 giving you a decimal of 1.125 which you can turn into a mixed number if 1 1/8.