Answer:

Explanation:
Now we have to,
→ Find the equivalent expression.
The expression is,
→ -4(-3u + 3) - u
Let's simplify the expression,
→ -4(-3u + 3) - u
→ -4(-3u) - 4(3) - u
→ 12u - 12 - u
→ 12u - u - 12
→ (12u - u) - 12
→ 11u - 12
Hence, the answer is 11u - 12.