The answer is 72 and 73. When you add 72+73 it equals 145.
If it finished at 1:33 it would’ve started at 12:30
But if it finished at 16:17 (4:17) it would’ve started at 2:44
The order of operations helps keep answers for multi-step equations similar. If the proper order of operations are not followed, then answers may vary. To show an example:
4 / 2 - 1
The proper order of operations would be:
Divide first, before subtracting
4 / 2 - 1
2 - 1
1
But if subtracting was done before dividing:
4 / 2 - 1
4 / 1
4
So not following the proper order would yield different and erroneous answers.
