Combine like terms to create an equivalent expression.
\[20\left(-1.5r+0.75\right)\]
The expression can be simplified by distributing $20$ to both terms inside the parentheses: \begin{align*}
20\left(-1.5r+0.75\right)&=20(-1.5r)+20(0.75)\\
&=-30r+15
\end{align*}The equivalent expression is $\boxed{-30r+15}$.
To combine like terms, we need to simplify the expression.
First, distribute the 20 to both terms inside the parentheses:
\[20\times(-1.5r) + 20\times(0.75)\]
This simplifies to:
\[-30r + 15\]
To combine like terms in the expression \(20(-1.5r + 0.75)\), we first distribute the \(20\) to each term inside the parentheses:
\[20 \cdot (-1.5r) + 20 \cdot (0.75)\]
This simplifies to:
\(-30r + 15\)
So, the equivalent expression after combining like terms is \(-30r + 15\).