1. **State the problem:** Calculate the value of $-1.75 - \frac{22}{20}$.\n\n2. **Convert decimals and fractions:** Note that $-1.75$ is a decimal and $\frac{22}{20}$ is a fraction. We can convert the fraction to a decimal for easier subtraction.\n\n3. **Convert $\frac{22}{20}$ to decimal:** $$\frac{22}{20} = 1.1$$\n\n4. **Perform the subtraction:** $$-1.75 - 1.1 = -1.75 + (-1.1) = -2.85$$\n\n5. **Final answer:** The result of $-1.75 - \frac{22}{20}$ is $-2.85$.