Answer:

Explanation:
Now we have to,
→ Simplify the given expression.
The property we use,
→ Distributive property.
The expression is,
→ 3(x + 4)
Let's simplify the expression,
→ 3(x + 4)
→ 3(x) + 3(4)
→ (3 × x) + (3 × 4)
→ 3x + 12
Hence, the answer is 3x + 12.