What is the result of subtracting 9.89 from 18.4?

To determine the result of subtracting 9.89 from 18.4, you perform the subtraction as follows:

18.4 - 9.89

First, it's helpful to align the decimal points for clarity:

18.40

-  9.89

Now, perform the subtraction starting from the rightmost digit.

1. In the hundredths place, you are subtracting 9 from 0, which requires borrowing from the tenths place. Therefore, the 4 in the tenths place becomes 3, and the 0 in the hundredths place becomes 10. Thus, 10 - 9 gives you 1.

2. In the tenths place, you now subtract 8 from 3 (after the borrowing). Again, borrowing is needed; the 8 in the units place reduces to 7, and the 3 becomes 13. So, 13 - 8 equals 5.

3. Moving to the units place, you subtract 9 from 7 (after borrowing). This is straightforward: 7 - 9 cannot be done without borrowing again, so you will have to consider this. After borrowing, it becomes 17 -