How do you get from 5 to 3.8?

please help quick!

Subtract?

I tried im just trying to find the rule:

a 5 6 7 8 9
b 3.8, 4.6, 5.4, ?, ?

To get from 5 to 3.8, you need to subtract a certain amount from 5. Since 3.8 is less than 5, you will subtract a positive number. Here's the step-by-step process:

1. Start with the number 5.
2. Determine the difference between 5 and 3.8: 5 - 3.8 = 1.2
3. Subtract the difference (1.2) from the starting number (5): 5 - 1.2 = 3.8

Therefore, to get from 5 to 3.8, you subtract 1.2 from 5.