Here we will show you step-by-step how to calculate 7 minus 9 using the long subtraction method.
Before we continue, note that 7 is called the minuend and 9 is called the subtrahend.
To solve the problem 7 minus 9 using long subtraction, we first put the largest number on top and the smallest number at the bottom like this:
| 0 | 9 | |||||||
| - | 0 | 7 | ||||||
Then you subtract the ones digits (9 - 7 = 2) like this:
| 0 | 9 | |||||||
| - | 0 | 7 | ||||||
| 2 |
Next you subtract the tens digits (0 - 0 = 0) like this:
| 0 | 9 | |||||||
| - | 0 | 7 | ||||||
| 0 | 2 |
Note that since the minuend is smaller than the subtrahend, the answer is a negative number.
And that's it. The problem with the answer is displayed below:
7 - 9 = -2
Long Subtraction Calculator
Here you can enter another subtraction problem for us to explain and solve using the long subtraction method: