2,013-100 is equal to 1,913.
2013 subtracted from1993 = 20
90
-46
-57/100
92
It means 100 fewer than before.
100 (higher) from 6.1 is 106.1 - (100 subtracted from 6.1 is -93.9)
-100
100/x - 8 = 2
45/100 - 20/100 = 25/100 = 1/4
c - cc = -c
100 - x = 19.29 - x = 19.29 - 100 - x = -80.71 (-1) * (-80.71) = 80.71