I mean I could be wrong, but that is way over complicating what is going on. The second eqation is its sum plus previous answer (7 + 5). Third is its sum plus previous (9 + 12). So forth is sum plus previous (19 + 21). Nothing accumulative.
I mean I could be wrong, but that is way over complicating what is going on. The second eqation is its sum plus previous answer (7 + 5). Third is its sum plus previous (9 + 12). So forth is sum plus previous (19 + 21). Nothing accumulative.