Question

Evaluate the expression. -7- (-6) + 4 a. 5 b. 3 c. -17 d. -9

Answer 1

4(5) + 5(6) - (-4/-2)

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just to help keep the signs straight, but there is nothing wrong with the way you did it.

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Now you can just start simplifying ... term by term. Multiply the 4 times the 5 and you get:

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20 + 5(6) - (-4/-2)

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Then multiply the 5 times the 6:

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20 + 30 - (-4/-2)

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Next divide the terms in the parentheses. -4 divided by -2 is +2 and you have:

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20 + 30 - (+2)

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When you remove parentheses preceded by a minus sign, you change the signs of the terms

inside the parentheses. So - (+2) becomes -2 when the parentheses are taken out and the

expression becomes:

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20 + 30 - 2

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Now add the three terms and the result is +48

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Hope this clarifies the problem for you. Good job ...

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