https://file.aiquickdraw.com/mathbot/file/17285902502110ew7pw05.jpg

The equation given is:

\[
\frac{d}{4} + 6 = 15
\]

### Steps to solve:

1. **Subtract 6 from both sides** to isolate the term with \( d \):
   \[
   \frac{d}{4} + 6 - 6 = 15 - 6
   \]
   Simplifying:
   \[
   \frac{d}{4} = 9
   \]

2. **Multiply both sides by 4** to solve for \( d \):
   \[
   d = 9 \times 4
   \]
   So, \( d = 36 \).

### Final Answer:
\[
d = 36
\]

Would you like more details or further explanation? 

Here are 5 related questions to expand your understanding:
1. How would you solve \( \frac{d}{3} + 5 = 20 \)?
2. What happens if there is a negative sign before the fraction, such as \( -\frac{d}{4} + 6 = 15 \)?
3. Can you generalize the solution method for \( \frac{d}{x} + a = b \)?
4. What would change if the equation had multiplication instead of addition, like \( \frac{d}{4} \times 6 = 15 \)?
5. How would you check your solution by substituting \( d = 36 \) back into the original equation?

### Tip:
When solving equations, always perform the same operation on both sides to keep the equation balanced.

Learn how to solve the linear equation d/4 + 6 = 15 step by step. This problem involves basic algebraic concepts and is suitable for students in Grades 6-8.

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