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The given problem is:

\[
\frac{4}{5} + \frac{3}{20} = \_ + \_ = \_
\]

### Step-by-step solution:

1. **Find a common denominator**:
   - The denominators are 5 and 20.
   - The least common denominator (LCD) of 5 and 20 is 20.

2. **Convert the fractions to have the same denominator**:
   - \(\frac{4}{5}\) needs to be converted to a denominator of 20. Multiply both the numerator and denominator by 4:
     \[
     \frac{4}{5} = \frac{4 \times 4}{5 \times 4} = \frac{16}{20}
     \]

   - Now, the problem becomes:
     \[
     \frac{16}{20} + \frac{3}{20}
     \]

3. **Add the fractions**:
   Since the denominators are the same, simply add the numerators:
   \[
   \frac{16}{20} + \frac{3}{20} = \frac{16 + 3}{20} = \frac{19}{20}
   \]

Thus, the complete equation is:

\[
\frac{4}{5} + \frac{3}{20} = \frac{16}{20} + \frac{3}{20} = \frac{19}{20}
\]

Would you like further clarification or details on any part of the solution?

### 5 Related Questions:
1. How do you determine the least common denominator (LCD) of two fractions?
2. How can you simplify fractions after adding or subtracting them?
3. What is the process for converting fractions with different denominators to the same denominator?
4. How do you check if a fraction can be simplified?
5. How can you convert a fraction to a decimal?

**Tip**: When adding fractions, always make sure to find the least common denominator first.

Learn how to add the fractions 4/5 and 3/20 by finding the least common denominator. This detailed solution explains each step, including converting the fractions to the same denominator and adding them. Perfect for students in Grades 5-7.

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