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How do you evaluate #-17+(-9)#?

Answer 1

Cameron Arnold

#-26#

Think of this rule:

A friend (positive) of an enemy (negative) is an enemy (negative)

We have:

#-17+(-9)# We now have an enemy.

#-17-9# Add the numbers (ignore the negative sign )

We then get #26#. Just add the enemy.

Our answer is #-26#

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Answer 2

Luna Angel

To evaluate -17 + (-9), you simply add the two numbers together:

-17 + (-9) = -17 - 9 = -26

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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.

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