81 - 49 = 32
well, the square root of 81 is 9, and seven squared is 49, so it wud be 40
49
81 minus 86 = -5
136 minus 81 is 55.
29 minus 81 is -52.
if u minus 59 from 81 you get 22
The GCF of 49 and 81 is 1.
18/27 minus 44/81 is 10/81
1.6531
81 - 15 = 66
81 - 78 = 3