To simplify the expression \(-\left(\frac{b}{4}\right)12\), you can follow these steps:
- Recognize that the expression involves multiplication of \(-\frac{b}{4}\) by \(12\).
- Rewrite the expression:
\(-\left(\frac{b}{4}\right)12 = -\frac{b \cdot 12}{4}\) - Simplify \(\frac{12}{4}\):
\(-\frac{b \cdot 12}{4} = -3b\)
So, an equivalent expression for \(-\left(\frac{b}{4}\right)12\) is \(-3b\).