Find the rational number halfway between 7/8 and 1/9

To find the number, you add them up and divide by 2

to add them up conver the bottom number to the same number

7/8 and 1/9

factor

8=2 times 2 times 2

9=3 times 3

least common multiplue=2 times 2 times 2 times 3 times 3=72

7/8 times 9/9=63/72

1/9 times 8/8=8/72

add them

63/72+8/72=71/72

dividee by 2

same as multiplyu 1/2

71/72 times 1/2=71/144

the number is 71/144