1. **State the problem:** Herbert's weight changes over four months are given, and we need to find the total weight gain or loss. 2. **List the monthly changes:** - Month 1: +107 pounds - Month 2: +85 pounds - Month 3: -27 pounds (loss) - Month 4: +114 pounds 3. **Calculate total weight change:** $$107 + 85 - 27 + 114$$ 4. **Perform the addition and subtraction step-by-step:** $$107 + 85 = 192$$ $$192 - 27 = 165$$ $$165 + 114 = 279$$ 5. **Interpret the result:** Herbert gained a total of 279 pounds over the four months. **Final answer:** Herbert's total weight gain is **279 pounds**.