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How do you evaluate #80+ ( - 63) #?

Answer 1

It's basically saying #80-63#, so the answer is #17#.

To put it visually:

#< -63 ... 0 ... 80 >#

Pretend that's a timeline. They want you to ADD -63 to 80, so you would count down from -63 to the right of the timeline--and you would land on 17.

So #80-63=17#

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Answer 2

Julian Avila

To evaluate ( 80 + (-63) ), simply add the two numbers together:

[ 80 + (-63) = 80 - 63 = 17 ]

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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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