To distribute the negative sign outside the parentheses for the expression \(-(-6.5g + 3)\), you apply the distributive property. This means you multiply each term inside the parentheses by \(-1\):
\[ -(-6.5g) + -3 \]
This simplifies to:
\[ 6.5g - 3 \]
So, the equivalent expression is:
\[ 6.5g - 3 \]