Solve Vertical Subtraction: 98 minus 79 Step-by-Step

$\begin{aligned} &98 \\ -& \\ &79 \\ &\underline{\phantom{776}} & \\ \end{aligned}$

To solve this problem, we'll subtract the two-digit numbers using the vertical subtraction method:

• Step 1: Set up the problem vertically with minuend (98) above the subtrahend (79). Ensure digits are aligned by place value.
• Step 2: Begin subtracting from the right-most column, the units place (8 - 9). Since 8 is less than 9, we must regroup.
• Step 3: Regroup by borrowing 1 ten from the tens place of 98. This changes the tens place from 9 to 8, and the ones place becomes 18.
• Step 4: Subtract the units column: $18 - 9 = 9$.
• Step 5: Now subtract the tens place digit. After borrowing, the tens digit of 98 is 8. Subtract: $8 - 7 = 1$.

Combining the results from the two columns, we find that $98 - 79 = 19$.

Therefore, the solution to the problem is $19$.