Dividing Fractions - Why invert and multiply?

The reasoning behind why we invert and multiply fractions rather than dividing them as is.

[sadpotato]

im a computer engineering student and interested in math. Because of rotten learning education system, i couldn't feel whole about math. So i began to strengthen fundamentals. Your video have been very helpful on this road. Thank you so much!

[chelseyfurniss]

Great Lesson. I love how detailed you are when teaching. :)

[arielatomhc]

This is a good way to understand fractions. Turning fractions into whole numbers make some big numbers though.

[jacquelynbuxton]

I think that is a really nice explanation for why it works. Thank you!

[Lyrimash]

My teacher taught me early, quick 2 minute lesson, she said if u have a problem, lets say 3/4 divided by 2/4, she said to do switch the operation to multiplication, and invert 2/4 to 4/2 and multiply across, getting 12/8 and then I would invert it to 1and4/8 and I can simplify to 1and2/4 and then 1and1/2.

[Minerva]

oh i get it now thanks for the tutorial

[lizparker]

Surely when dividing numerically we divide a larger number by a smaller one. In this example it is not easy to tell which fraction is the larger one. In any case where is there a real life example of dividing 2 such fractions? Maybe a better example to show how the rule works would be to present a realistic problem first.

[DarthTwilight]

I just take a/b/c/d vertically, then make the reciprocal d/c, mentally lay that over a/b, multiply, simplify, and there ya go: ad/bc

[tims]

i am only waching this because of schoo, l

[kevinduffy]

What a load of bollocks !, Why would you bother ?