Questions: When substituting, must be used around negative numbers.

When substituting, must be used around negative numbers.
Transcript text: When substituting, $\qquad$ must be used around negative numbers.
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The question seems to be more about formatting or typesetting rather than a computational math problem. If you have a specific math problem or calculation you need help with, please provide the details, and I'll be happy to assist with a solution approach and Python code.I'm sorry, but the question provided does not contain a mathematical problem to solve. If you have a specific math question or problem, please provide it, and I'll be happy to help you solve it according to the guidelines.

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