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

$-2$
The order of operations follow the following degree of priority (PEMDAS rule): First Priority: Parentheses and grouping symbols Second Priority: Exponents Third Priority: Multiplication or Division, whichever comes first from the left Fourth Priority: Addition or Subtraction, whichever comes first from the left Use the rule above to find: $=-20-(-18) \\=-20+18 \\=-2$