0.000039
-39/10
.39
2.25 x 10-39 = 0.00000000000000000000000000000000000000225
5.5 X 10^11
-39 minus -26 is -13
-3.9908384e+39
It is 39^-1.
4 - (-39) = 4 + 39 = 43
13
39 - - 26 = 65
-39 - (+26) = -39 - 26 = -65
39 ÷ 1 3/10 = 39 ÷ (10x1+3)/10 = 39 ÷ 13/10 = 39 x 10/13 = 3 x 10 = 30