the answer would be 67,127 because the number in the ones would be 7 and the tens number would be 2 since it wouldn't more than 1.
67,102
67,135
1-7
67,127
12/3 or the same thing as ur question but just add a division sign, eg. difference of two and one that would be 2-1
3.9*10 = 39 then that to the 20 power is 6.626621133E31
Hope this helps!
It is not too difficult. Just do this
50-15
5(10-3)
The answer is 5(10-3)