Answer
$-2$
Work Step by Step
$$\begin{align*}
6t+3(1-2t)-5&=6t+3(1)+3(-2t)-5 &\text{Apply the Distributive Property.}\\
&=6t+3-6t-5 &\text{Simplify.}\\
&=-2 &\text{Combine like terms.}
\end{align*}$$
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