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3-61.

Simplify each of the following expressions without using a calculator. Draw diagrams or use words to show your thinking.  

Compute without a calculator

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    Remember that terms are separated by addition symbols ().

    Can you draw or explain how you separate these terms? You should simplify these terms before adding them together.

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    Adding negative numbers can be tricky. Could it be helpful to draw a diagram like the tightropes used in previous lessons?

    The expression simplifies to .

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    Reminder: Multiplying two negative numbers results in a positive number. Can you find the product and explain why this is so?

    The expression simplifies to . Don't forget to show your thinking!

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