Find the value of the expression `(15x + 9)/(3)` when
`x = 5`

Answer

To find the value of the expression \((15x + 9)/3\) when \(x = 5\), we can follow these steps:

### Step 1: Substitute the value of \(x\)
We start with the expression:
\[ \frac{15x + 9}{3} \]
Now, substitute \(x = 5\):
\[ \frac{15(5) + 9}{3} \]

### Step 2: Calculate \(15 \times 5\)
Next, calculate \(15 \times 5\):
\[ 15 \times 5 = 75 \]
So, we can rewrite the expression as:
\[ \frac{75 + 9}{3} \]

### Step 3: Add \(75\) and \(9\)
Now, add \(75\) and \(9\):
\[ 75 + 9 = 84 \]
Now, the expression becomes:
\[ \frac{84}{3} \]

### Step 4: Divide \(84\) by \(3\)
Finally, divide \(84\) by \(3\):
\[ \frac{84}{3} = 28 \]

### Final Answer
Thus, the value of the expression when \(x = 5\) is:
\[ \boxed{28} \]