How do you find the difference #7-(-4)#?
Think of this rule:
That negative person is your enemy.
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Remember: minus a minus is a plus:
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To find the difference between 7 and -4, you simply subtract -4 from 7:
[ 7 - (-4) = 7 + 4 = 11 ]
So, the difference between 7 and -4 is 11.
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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.
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.
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.
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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