Answer:
12.79
Step-by-step explanation:
The question is asking for you to subtract 7.6 from 20.39
The equation is 20.39-7.6=n (n represents a number or difference of the equation)
1.) When writing the equation down to solve, align the decimal points to each other meaning the 0 in 20.39 has 7.6 under it!
20.39
- 7.6 (Note the bold numbers are showing the decimal point aligned)
2.) Fill in places that have missing digits with a 0 meaning when you aligned the numbers, the number 9 doesn't have anything to subtract with so you should fill it with a 0
20.39
- 7.60 (Note there has been a 0 added to 7.6 once it was aligned)
3.) Subtract regularly!
20.39-7.60=12.79
Therefore the answer to this question is 12.79