First, identify the associative property of multiplication, which states that for any numbers \(a\), \(b\), and \(c\), it holds that \((a \cdot b) \cdot c = a \cdot (b \cdot c)\). Applying the associative property, we have:
1. Original expression: -x \cdot (6 \cdot 25)
2. Apply the associative property: (-x \cdot 6) \cdot 25
The equivalent expression is (-x \cdot 6) \cdot 25 .