How to Solve Proportions Using Cross Products : Number Theory Education

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One effective method for solving proportions is through the use of something called "cross products." Solve proportions using cross products with help from a longtime mathematics educator in this free video clip.

Expert: Jimmy Chang
Filmmaker: Christopher Rokosz

Series Description: Mathematics and number theories don't just stop being useful the moment you get up from your desk and leave the classroom - they're actually very important all throughout our lives. Get a number theory education with help from a longtime mathematics educator in this free video series.
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THT EASY OMG my teacher makes it so complicated!!

ArmandoSanchez-fpis
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Wait did you just write on the glass backwards so we can se it?

yungtaco
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I have to watch 15-20 minute long videos and I just learned it in 1. Thanks!

dronealaska
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Thanks you explained way better then my teacher

mj-cdfr
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thank you you saved my brain from forgetting how to math

embereatstoasters
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I was gonna be killed by my math teacher... but when jimmy came in to help... my math teacher does not have a chance!

brinxleyz
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This is going to help people I suggest jimmy Chang if anyone

jasminemcgee
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i totally get it now....teachers totally complicate things!Anyways, thanks Jimmy!!!

Bingchanni
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My teacher makes it hard to do this is easy GREAT VIDEO

jakeiler
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dude my sheet was overdue. you saved my gluteus maximus

sersi_bunai
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If people ask me where I learned this I could say he is my teacher

giant
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I cant belive I learned a topic in 1 minute while school teachers teach it in an hour

Woodie.
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so i was putting pressure on myself on formative and i could have done it that way

Doofenator
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Learn from teachers (no) Learn from jimmy (yee boi)

brinxleyz
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But WHHHYYYY???

Why would essentially dividing the fraction allow you to find the value of 'x'?!

silversunastrology
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wait wut, why does Jimmy use the example exactly the same as my teacher. De javu?

plumt