Thomas and Freya have ages that are consecutive integers. The sum of their ages is 16 less than three times the larger of the two ages. Which equation could be used to solve for the smaller age, a? 1. a+(a +1) = 3(a+1) - 16
2. a + (a+2) = (3a + 1) - 16
3. a(a + 1) = 16 - 3a
4. a(a + 2) = 16 - 3(a +2)