The answer would be B because it's saying sum which means adding then it says less which means subtracting.
The second digit from the right or second to last digit from the right. unless there is a decimal. in that case then it would be the second to last digit from the right in front of the decimal.
56 because you do 9x equal to 63. 63 divide by 9 is 7. 7 times 8 is 56
