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

$1$
RECALL: The order of operations follows the PEMDAS rule. First Priority: P - Parentheses Second Priority: E - Exponents Third Priority: M/D - Multiplication or division, whichever comes first from the left Fourth Priority: A/S - Addition or subtraction, whichever comes first from the left Simplify within the parentheses to obtain: $=-6-(-7)$ Subtract to obtain: $=-6+7 \\=1$