To solve \( \frac{11}{15} + \left(-\frac{3}{4}\right) \):

### Step 1: Find a common denominator
The denominators are 15 and 4. The least common denominator (LCD) is 60.

Convert each fraction to have a denominator of 60:
\[
\frac{11}{15} = \frac{44}{60} \quad \text{and} \quad -\frac{3}{4} = -\frac{45}{60}.
\]

### Step 2: Add the fractions
Now add the fractions:
\[
\frac{44}{60} + \left(-\frac{45}{60}\right) = \frac{44 - 45}{60} = \frac{-1}{60}.
\]

### Final Answer:
\[
\frac{11}{15} + \left(-\frac{3}{4}\right) = -\frac{1}{60}.
\]

Would you like further details or have any questions?  

Here are 5 related questions to expand your understanding:
1. How do you determine the least common denominator of two numbers?
2. What are other methods to add or subtract fractions with different denominators?
3. How do you simplify complex fractions?
4. How can you convert improper fractions into mixed numbers?
5. What are the practical applications of adding fractions?

**Tip:** Always simplify fractions at the end to ensure they are in their lowest terms!

Solve the problem 11/15 + (-3/4) with this detailed guide. Learn key concepts like finding the least common denominator, converting fractions, and performing addition and subtraction of fractions. Suitable for students in Grades 5-7.

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