To solve the equation \( \frac{x}{-9} = 9 \) using the Multiplication Property of Equality, we can multiply both sides of the equation by \(-9\) to isolate \(x\).
Here's the step-by-step solution:
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Start with the equation: \[ \frac{x}{-9} = 9 \]
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Multiply both sides by \(-9\): \[ -9 \cdot \frac{x}{-9} = 9 \cdot (-9) \]
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Simplify both sides: \[ x = -81 \]
Thus, the solution to the equation is: \[ x = -81 \]