## Algebra 1: Common Core (15th Edition)

We first consider what is within the absolute value bars. $-7+2=-5$. However, because the straight lines that enclose the expression -7+2, we know that we are supposed to find the absolute value, meaning that we take whatever number we get and make it positive. Thus, we make negative 5 positive 5. Then, we subtract 4 to obtain the answer: 1.