Solve Vertical Subtraction: 88 minus 9 Step-by-Step

$\begin{aligned} &88 \\ -& \\ &~~9 \\ &\underline{\phantom{776}} & \\ \end{aligned}$

To solve this problem, we'll perform vertical subtraction with regrouping:

• Step 1: Write the numbers vertically:

$88$
$-9$

• Step 2: Start with the units column (rightmost). We have $8 - 9$.

• Step 3: Since you can't subtract 9 from 8 directly without going negative, we regroup. Borrow 1 from the tens place of 88.

• Step 4: Change the tens column: $88$ becomes $7$ tens and the units column becomes $18$ (since you borrowed 10).

• Step 5: Now subtract: $18 - 9 = 9$.

• Step 6: Move to the tens column (now 7): Subtract 0 from 7 (since no tens are in 9): $7 - 0 = 7$.

Therefore, the result of the subtraction is $79$.

To conclude, the solution to the subtraction problem is $79$.