Make them improper fractions: 14 1/4 would be 57/4 10 3/7 would be 73/7 Make them the same common denominator: Times 57/4 by 7/7 =399/28 Times 73/7 by 4/4 =292/28 Now subtract them: 107/28 Now Simplify: 107/28= (3*28+23)/28=3+23/28= 3 23/28 The Answer: 3 23/28