Question 58177
9/10 and 7/8

to add these items together you must find a comon denominator in this case an easy denominator is 80,

multiply 9/10 by 8 to get 72/80
multiply 7/8 by 10 to get 70/80

now you can add them together to get 142/80 you can divide the top by 2 to find the answer

142/2=71

so 71/80 is your answer.