2012 minus 1968 equals 44. ( 2012- 1968 = 44
2010 minus 1994 = 16
2010 minus 1939 is 71.
2010 minus 1981 is 29.
40
2010 - 1968 = 42
2010 minus 1895 equals 115(2010-1895=115)
2010 minus 1993 equals 17.
-7990 (minus 7990)
2010 - 1996 = 14
2010 - 1947 = 63
2010 - 673 = 1337