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Please provide an answer to the questions below that contains 250 to 300 words to each.

1. If a < b, then -a > -b, Why? Illustrate your reasoning with several examples.

2. How can you differentiate between an equation and an expression? Give several examples of each.

3. How does the knowledge of simplifying an expression help you to solve an equation efficiently? Give an example of using and not using simplification to illustrate your reasoning.

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