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Home > MC1 > Chapter 4 > Lesson 4.3.1 > Problem 4-88

4-88.

Simplify each expression.   

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    For parts (a) and (b), remember that adding negative numbers is like taking steps backwards on a tightrope. Does it help to draw a diagram?

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    One method for subtracting integers is to make a diagram of the first integer using positive and negative tiles. Then remove the second integer from the diagram. If there are not enough tiles, add zero pairs.

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    Parts (d) and (e) both have terms which need to be simplified before they can be combined with the other
    term in the expression.

    The answer for part (d) is .

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    Use the hints provided for parts (a), (b), and (c) for help with adding and subtracting.

    Simplify inside the parentheses.

    Multiply.