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Combine Like Terms

10/10/2015

36 Comments

 
36 Comments
Taylor hemingway
10/12/2015 12:23:13 pm

1st comment yay!!

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t.h
10/12/2015 12:28:01 pm

supposed to be 5-3x=10+7x

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Ethan Anderson
10/12/2015 12:42:50 pm

I understand this quite well now

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Rose Warner
10/12/2015 12:48:30 pm

Just as we learned in class

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Piper Barrass
10/12/2015 12:58:27 pm

That looks like what we did in class today

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Hazel Montgomery-Walsh
10/12/2015 12:59:32 pm

Question- Say there were three variables in an equation... 7x+3a+1b=10x+8a+3b...this is relatively easy to simplify... but would it translate to the slope intercept form for a linear line or would this equation math up to a different function family/line? We would solve for each variable... would all three variables be the slope? (<--doesn't seem like that idea would make much sense :)

Video- Again, this video was great! :)

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Dennis Lin
10/12/2015 01:35:54 pm

I didn't even get what you just said there. And yeah, I wouldn't say that idea made very much sense.

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Mr. Bigsby
10/12/2015 04:48:56 pm

Whoa, three variables! Well, first off we can only "solve" for one variable meaning there can only be an "x" in the equation to find the exact value. When we have two variables it creates a Line with lots of possible solutions. And when we have three variables it creates some kind of 3D line/figure! Save that question for Ms. Brown's Geometry class. Luckily in this class we will only be dealing with the relationship between TWO variables.

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Mr. Bigsby
10/12/2015 04:53:23 pm

You can have three variables though. An example would be selling two different products.
x = apples sold
y = bananas sold
z = income

I believe it would make a geometric plane. Been awhile since I took Geometry :)

Alexis Kahler
10/12/2015 01:34:39 pm

Hey I couldn't watch the video but I'm able to comment. I will try later but I pretty much understood you in class.

Hazel, I don't think that all three variables can be the slope because what would mean?

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Emily Ritzes
10/12/2015 02:22:50 pm

Great video! The PANDEMIC game seems really complicated.

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Mr. Bigsby
10/12/2015 04:54:18 pm

Maybe we will play Pandemic during the Exponential unit!

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Megan McDaniel
10/12/2015 02:37:41 pm

Great video... Looks like what we did in class

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Sarina
10/12/2015 02:45:24 pm

I'm getting the hang of it.

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Alexis Kahler
10/12/2015 04:00:57 pm

I got it to work. cool video

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Dennis Lin
10/12/2015 04:06:16 pm

That's Nice.

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Julianna
10/12/2015 04:39:17 pm

I agree with Hazel that if you do the problen right then it will be different function family then linear. I think that is why we are not using three variables. Great question Hazel!

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Logan Nix
10/12/2015 04:48:29 pm

I may not have been in class today but this seems fairly simple.

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Lauren
10/13/2015 04:47:21 am

This is getting much easier i understand this a lot better now!

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jaelyn
10/13/2015 09:55:13 am

how do you know if its a negative or a subtract sigh

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Mr. Bigsby
10/13/2015 02:06:23 pm

Negative signs and subtraction signs work the same way. They both reduce the amount. If it helps change every subtraction sign to a plus negative:
10 - 3 = 10 + -3

subtracting a negative actually adds!
10 - -3 = 10 + 3

You also see this when we circle the terms. When we combine the like terms, we are adding them all together, so a 10 - 3 would be adding a negative 3 to the 10.

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Erica
10/13/2015 01:48:14 pm

There is an online game called pandemic...only that you're playing as the disease. You're trying to try to kill the entire world. I finnally beat the game...by killing everyone! MWAHAHAHAHAHAHA!!

...I understand if you think I'm a lunatic.

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Dennis
10/17/2015 03:44:34 pm

(You should be expecting things like this from her! It's normal!)

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Georgia
10/13/2015 01:50:55 pm

Good video

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Karli
10/13/2015 02:11:12 pm

Sorry hiiiii my comment didn't load

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Fletcher thomas
10/13/2015 02:30:17 pm

cool video

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Viola
10/13/2015 04:12:11 pm

The only thing I don't really understand that well is how we do fractions.

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Mr. Bigsby
10/14/2015 08:24:03 pm

A fraction can be eliminated by multiplying by its reciprocal (flipped version)

3/4x = 6
multiply both sides by 4/3
4/3(3/4x) = 6(4/3)
4/3 multiplied by 3/4 is just 1 so it eliminates.
x = 6(4/3)
with fractions we multiply by the top and divide by the bottom
x = 6 times 4 divided by 3
x = 24 divided by 3
x = 8

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Krissy
10/16/2015 08:20:07 pm

I think I get it.

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Amna
10/19/2015 01:47:40 pm

Hi

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Allyson Carter
10/20/2015 04:48:42 am

Hi

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Kendle WEAVERRRRRRRRRRRRRRRRRR
10/22/2015 06:39:37 pm

ok this makes sense...
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Zoe
10/25/2015 05:50:31 pm

Hi sorry i thought i had commented when i watched this

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maddox
10/26/2015 03:15:34 pm

hi. nice videuz

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Justin Maddox
10/26/2015 04:14:35 pm

In the beginning you said that you could only add or subtract what would happen if you multiplied

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Julianna
11/4/2015 06:25:38 pm

In class today you said that if the problem was g=#g+5 (#=number) that this would get people confused will we see any problems like this? If we do then how would we change it according to the problem without using x or y as a variable?

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