## anonymous one year ago What is the multiplicative inverse of 2 1/2?

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1. zepdrix

Hey Audie :) The inverse of multiplication is division. Example: The inverse of $$\large\rm \times5$$ multiplying something by 5 is $$\large\rm \div5$$ dividing by 5. Division is the same thing as multiplying by the reciprocal. That's the way we would prefer to think of it. So we would say that the multiplicative inverse of $$\large\rm 5$$ is $$\large\rm \frac{1}{5}$$.

2. zepdrix

So to find the multiplicative inverse, I had to "flip" the fraction. Oh I guess we would have to think of 5 as $$\large\rm \frac{5}{1}$$ in order to flip it. For your specific problem, you'll need to write your mixed number as an improper fraction before you can flip it.

3. zepdrix

$\large\rm 2\frac{1}{2}=\frac{5}{2}$And then flip it, ya? Any confusion there? :O