## Introductory Algebra for College Students (7th Edition)

$-7$
In this problem, when you see a positive ($+$) and a negative ($-$) sign together, then the negative ($-$) sign dominates. For this problem, we can rewrite the expression as: $7 - 5 - 13 + 4$ Now we evaluate this expression. Since we are only adding or subtracting the numbers, we add or subtract directly from left to right: $2 - 13 + 4$ = $-11 + 4$ = $-7$ $-7$ is your answer.