Problem

What number do you subtract from 15 to get 7?

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Problem 52 Easy Difficulty

What number do you subtract from 6 to get 0?

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Prealgebra

Chapter 1

Whole Numbers

Section 4

Subtraction with Whole Numbers

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Video Transcript

So in this problem we're being asked to simplify the given expression. So it looks like we have a division problem here, we have zero getting divided by six. Well whenever you have the vision with zero you have to be very careful So the answer is ever going to be zero or it's going to be undefined. So the question is well how do we know? Well let's pretend the answer is zero. Well just like the regular division. So for example if I have 12 divided by two, we know this is equal to six because the check we would do six times two and that has to equal to 12, which it does. So if this value is in fact equal to zero, that means that zero times six should in fact equal to our numerator which is zero. Well zero times six is equal to zero. So it does check out. So that tells us that zero divided by six is equal to zero. So my hint is whenever you're numerator is equal to zero, you can divide that by any number and the result will be zero. So our final answer to this problem is zero.

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Problem

What number do you subtract from 15 to get 7?

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Charles P. McKeague

Prealgebra

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Prealgebra

Charles P. McKeaguePrealgebra

Charles P. McKeague

Prealgebra