You could try subtracting 7 from 0.
Never subtract an /a 0 .
0
subtracting a negative creates a positive result. 0- (-5) = 0+5 = 5
25
-62
320
16 - 9 = 7.
Subtracting 100 days from March 16 in a non leap year gives December 6 in the previous year. Subtracting 100 days from March 16 in a leap year gives December 7 in the previous year.
Adding a negative is the same as subtracting a positive. 9 - 9 = 0 9 + (-9) = 0
0 x -16 = 0
Let f = 0.1616...then 100f = 16.1616... Subtracting the first from the second gives 99f = 16 Therefore f = 16/99.