Write a decimal problem that requiers regrouping to slove. solve it

Ahiker stands at an unknown elevation before he ascends 2 miles up a mountain to an elevation of 9 miles. find the elevation of the hiker before his ascent.

Joanie wrote a letter that was 1 1/4 pages long. katie wrote a letter that was 3/4 page shorter then joagies letter. how long was katies letter

Matt had 5 library books. he checked out 1 additional book every week without retuening any books. whats the matching equation