need help with this problem

Question

 The sum of the page numbers on the facing pages of a book is 89. What are the page numbers? The number on the left page is__ and the number on the right page is __

Answer 1

p represents the left page number

p + p + 1 = 89

2p + 1 89

20 = 88

p = 44

 

What is the right page number