Adding mixed numbers with unlike denominators | Fractions | Pre-Algebra | Khan Academy

Adding Mixed Numbers with Unlike Denominators

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Pre-Algebra on Khan Academy: No way, this isn't your run of the mill arithmetic. This is Pre-algebra. You're about to play with the professionals. Think of pre-algebra as a runway. You're the airplane and algebra is your sunny vacation destination. Without the runway you're not going anywhere. Seriously, the foundation for all higher mathematics is laid with many of the concepts that we will introduce to you here: negative numbers, absolute value, factors, multiples, decimals, and fractions to name a few. So buckle up and move your seat into the upright position. We're about to take off!

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[yehiahatem]

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[shamimehnahavandifar]

thank you for helping a mathematically challenged 13 year old :)

[thelivingtombstone]

this channel really helps with my mathmatics

[-cringequeen-]

Thank you very very much, I needed this as a 6th grader and I can now easily solve this! Thank you very very much!

[ririlushhh]

Wow, sort of confusing when it comes to the factoring, but I got it eventually ! Thank you soooo much<333

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[isabellacandelario]

I passed my finals by you. Thank you Sal Khan

[adrianfreeman]

THANKS SO MUCH KHAN THIS REALLY HELPED I SUBSCRIBED AND LIKED THIS VIDEO

[cassyloveyoface]

Had to watch it three times but I finally get it:)

[marwan]

thx Sal this video was awesome ACTUALLY learned this FINALLY

[SugaBunny]

You are awesome! I wish you were my math teacher growing up. I am studying for an entrance exam for registered nursing. It's been a few years since practicing math and I LOVE how you write down all your steps. After watching and following along with you in my notebook I was able to pick up the example problems in my book with more ease. Thank you.

[NBAjoe]

how did you get 5, 24, and 12 though. please tell me

[M_g-hqdt]

The video is super old but right now it was very useful to me de

[seijmr]

Ahhhh.... Wait, what?! I don't understand anything 😭😭 my brain is going to 😥😥

[Zohirul-Jewel]

To solve 3/1/12 just do 12X3+1 to get 36/12 do that for each of the fractions and just add the results, it's easier that the way hes showing us.

[sagrariovalle]

Raise your hand if you did not understand it

[onward]

This is awesome stuff.
Very helpful information.

[deniselliana]

*when your mom says YouTube is stupid so she makes you do math*

[erikamurillo]

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[demarkusbrown]

STILL GOT IT!! Thank you Douglas County Colorado Public School!!