They want you add two numbers 6 7/8 + 1 3/8 = 7 10/8 = 7 + 1 + 2/8 = 8 + 1/4 = 8 1/4. ANSWER You add the integer numbers first. Then you add the fraction parts. Then you extract an integer number from the sum of fraction parts. If you manage to make everything correctly, at the end you will get your answer.