How would you solve this?
n - 4 - 9

- anonymous

How would you solve this?
n - 4 - 9

- katieb

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- freckles

solve or simplify?

- freckles

solve means we have an equation or inequality

- freckles

we do not have that here

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## More answers

- freckles

-4-9=-(4+9)=-13
so n-4-9=n-13

- ♪Chibiterasu

Yeah I would assume simplification . . . so just add the regular numbers like freckles did. There's only one variable. Any further simplification would require a given solution.

- freckles

I have to ask @beckyg111 did you mean n-4=9

- freckles

or n-4=-9

- freckles

or did you really just mean n-4-9

- anonymous

ok in class im doing like the rainbow thin. Do you know what that is?

- anonymous

It does say n - 4 - 9

- freckles

ok in the instructions is to just simplify right?

- freckles

and no never heard of rainbow thin
sounds like the rainbow is sick :p

- anonymous

heres another example
|dw:1441194815402:dw|

- freckles

i'm not familiar with that kind of mathematics

- freckles

is that suppose to be -3x+6=-3x+2+4 ?

- ♪Chibiterasu

are you sure its not like n(-4 - 9)?

- anonymous

no.
you bring the -3 and the x down so that would look like this.
-3x.
The 3 is negative and the 6 is positive so the result will be negative...i think
then all you do is multiply 6 and 3 (my mistake its not 24 its 18)
So then you bring the -3x and add the 18
-3x 18

- freckles

so you mean -3(x+6)
which when using distributive property gives
-3(x)+(-3)(6)
-3x+(-18)
-3x-18

- anonymous

I guess but i have to show my work and i have to do it the way my teacher showed me
http://easyk12.blogspot.com/2011/10/multiplication-rainbow-method.html

- ♪Chibiterasu

Yeah . . . The solution -3x - 18 does match with that.

- freckles

omg

- freckles

wait a minute

- freckles

nevermind I'm confused again

- freckles

like looking at that site
almost thought x was a multiplication symbol here

- freckles

instead of a variable

- ♪Chibiterasu

Your teacher uses the most unnecessary methods . . .

- ♪Chibiterasu

Ok I kinda get it now but I still have no clue . . .

- ♪Chibiterasu

I didn't think I could struggle with this kind of math and I'm already in advanced math.

- ♪Chibiterasu

She's gone lol.

- freckles

I honestly don't think it is you. I think something is missing...
because the site becky linked us too shows something completely different than problems expressed here.

- freckles

3x(-6)
where x is a multiplication symbol
3x(-6)=-18

- freckles

I don't see what this has to do with n-4-9

- freckles

actually she wrote -3x(+6)
which is just really -3x(6)
again x is a multiplication symbol
this is still -18 though

- ♪Chibiterasu

Yeah I have no idea why the "rainbow method" would apply to this.

- ♪Chibiterasu

I feel like her teacher just made it even more complicated.

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