It appears that the question is asking how much of a kilogram of oranges remains after Isabel eats a portion of them.

Given:

• Isabel has $\frac{9}{10}$ kilogram of oranges.
• She ate $\frac{2}{10}$ kilogram of oranges.

To find out how much is left, we subtract the amount eaten from the total amount:

$\frac{9}{10} - \frac{2}{10} = \frac{9 - 2}{10} = \frac{7}{10}$

So, $\frac{7}{10}$ kilograms of oranges remain.

Would you like a more detailed explanation or have any further questions?

Here are 5 related questions for you:

1. What is the process of subtracting fractions with the same denominator?
2. How do you convert fractions into decimals or percentages?
3. How do you handle situations where the fractions have different denominators?
4. How can you apply this subtraction method to solve real-life problems, like budgeting or cooking?
5. What are other types of fraction operations, such as addition or multiplication?

Tip: When subtracting fractions, ensure the denominators are the same before proceeding with the subtraction.