Chapter 2 - Real Numbers - 2.5 - Translating from English to Algebra - Problem Set 2.5 - Page 80: 10

"The quantity of the difference of $a$ and $b$ divided by 4"

$a-b$ means difference of $a$ and $b$ Thus, the translation of the given expression into a word phrase is: "The quantity of the difference between $a$ and $b$ divided by 4"