9 times what equals -90
Understand the Problem
The question is asking for a number that, when multiplied by 9, results in -90. To find this number, we can set up the equation 9 * x = -90 and solve for x.
Answer
$x = -10$
Answer for screen readers
The final answer is $x = -10$.
Steps to Solve
- Set up the equation
We start with the equation derived from the problem:
$$ 9 \cdot x = -90 $$
- Isolate the variable
To solve for $x$, we need to isolate it on one side of the equation. We can do this by dividing both sides by 9:
$$ x = \frac{-90}{9} $$
- Perform the division
Now we simply divide -90 by 9:
$$ x = -10 $$
The final answer is $x = -10$.
More Information
The solution shows that multiplying -10 by 9 gives you -90. This reinforces the concept that a negative times a positive yields a negative result.
Tips
A common mistake is forgetting that multiplying a negative number by a positive number results in a negative number. Always remember that the sign of the product depends on the signs of the numbers involved.
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