The page numbers are 265 and 266.
What are integers?
An integer can be described as numbers that has no decimal or fractional part , this can be negative and positive numbers as well as zero.
let the Left page number be n
let the Right page number to be (n + 1)
Then the equation become
[tex][n + (n + 1) = 511][/tex]
then 2n + 1 = 531
2n = 530
n = 265
Therefore the page numbers are 265 and 266.
Learn more about integers at:`
https://brainly.com/question/17695139
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