You seem to be unaware of the fact that you could have obtained the answer much more easily and quickly by using the calculator that comes as part of your computer.
The answer is 45.
1 + 44 + 5 - 50 = 0
45
44
44 plus 44 plus 44 plus 34 is equal to 166.
It is -44 + 4a
1 plus 44...... wow
44
44 + 44 + 4 - 44 = 48
It is: 44
44
100
44 plus 33 is 77