Final answer:
The expression -1/17 - 12/17 evaluates to -13/17.
Step-by-step explanation:
To evaluate the expression -1/17 - 12/17, you need to find a common denominator for the fractions. Since both fractions have a denominator of 17, you can simply subtract the numerators:
-1 - 12 = -13
So, the answer is -13/17.
Learn more about Evaluating expressions