Yesterday,Annie walked 9/10 mile to her friend's house.Together,they walked 1/3 mile to the library.Which is the best estimate for how far Annie walked yesterday ?
To solve, you need to find the least common multiple of the denominator.
In this case, its 30.
39= 27/30
110 = 10/30
She walked 37/30 miles or 1 mile and 7/30th of a mile