Greatest common factor 12y + 18xy

John read the first 114 pages of a novel, which was 3 pages less than 1/3 of the novel. write an equation to determine the total number of pages (p)(p) in the novel.

Can someone check if i did this right since i really want to make sure it’s correct. if you do you so much

[10 points, algebra 2]according to my answer key the restrictions are -1 and 4. but why not positive 1?