My question is: While Greg was camping with his family for a week, it rained for 3 days. When he looked at the weather records, he saw that the amount of rain was 3 mm, 6 mm, and 5 mm on the three days. During the same week, it rained 26 mm at his house. How much less rain did Greg experience while camping? Your thoughts:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
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While camping there was 3 + 6 + 5 = 14 mm of rain in 3 days. Greg experienced 26 – 14 = 12 mm less rain at the campsite. The final answer: 12.