3. \( 4 a=24 \)

To solve the equation \( 4a = 24 \), you can simply divide both sides by 4. This gives you \( a = \frac{24}{4} \), which simplifies to \( a = 6 \). Voila! You've found the value of \( a \) through a straightforward division. As you tackle similar equations in the future, remember that isolating the variable by performing the same operation on both sides is the key. Common mistakes include forgetting to perform the same operation on both sides or miscalculating the division. Always double-check your work to avoid these little pitfalls!