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How do you solve #-7( - 7n - 3) = 168#?

Answer 1

Kennedy Adams

#n=3#

You would start out by distributing out that #-7#

#-7(-7n-3)=168#

#(49n+21)=168#

#49n+21=168#

Then subtract #21# from both sides

#49n=147#

Then divide both sides by #49.#

#n=3#

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Answer 2

Julia Adams

To solve the equation -7(-7n - 3) = 168, first distribute -7 to both terms inside the parentheses: -7 * -7n = 49n and -7 * -3 = 21. Then the equation becomes 49n + 21 = 168. Next, subtract 21 from both sides to isolate the term with the variable: 49n = 147. Finally, divide both sides by 49 to solve for n: n = 3.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.