7 squared and 3 squared. 49 - 9 = 40
65 - 40 = 25
16x subtracted by 25xy = -9
Five hundred is represented by D, one hundred is a C and fifty is L. The 40 is going to be ten subtracted from fifty and 9 will be 1 subtracted from 10. It would be written as DCCCXLIX.
5.28 m subtracted by 9 cm = -3.7199999999999998
16
6
-2
If you meant 9/10 - 3/4... First convert both numbers to a common denominator. 9/10 = 36/40 & 3/4 = 30/40 therefore this gives us the answer of 6/40 which equals 3/20 in its simplest form.
-17
25/40 - 12/40 = 13/40
99