Answer
1 7 6
Work Step by Step
Step 1: Add the digits in one’s column
Sum of the ones column 7+9= 16. Write 6 ones in the ones column and write 1 tens in the tens column.
1
9 7
+7 9
____
6
Step 2: Add the digits in the tens column, including the regrouped 1.
Sum of the tens column 1+9+7=17. Write 7 tens in the tens column and 1 hundred in the hundred column.
1 1
9 7
+7 9
____
1 7 6