2,013 minus 1,929 is 84.
2009 - 1929 = 80
1929 - 1947 = -18
2011 - 1929 = 82
The answer is 1929.
2013 minus 1958 = 55
2,013 minus 1,919 is 94.
1,942 minus 2,013 is -71.
2,013 minus 1,727 is 286.
2,013 minus 1,940 is 73.
1,993 minus 2,013 is -20.
2,013 minus 30 is 1,983.
1,956 minus 2,013 is -57.