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Home > MC1 > Chapter 3 > Lesson 3.4.2 > Problem 3-107

3-107.

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

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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 product of this expression is .

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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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    Mara used this expression to explain part of her reasoning. Does this help you to solve the problem?

    Can you think of another way to show your thinking?