Perform the operation 8-1/2+5-1/8

12.375 is believed to be the correct answer

12 3/8

Step-by-step explanation:

8-1/2+5-1/8

8+5 - 1/2 - 1/8

Lets get a common denominator of 8

8+5 - 1/2 * 4/4 - 1/8

8+5 - 4/8 - 1/8

Combine the whole numbers and the fractions

13 - 5/8

Now we need to borrow from the whole number

12 + 1 - 5/8

12 + 8/8 - 5/8

12 + 3/8

12 3/8