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Mathematics 18 Online
OpenStudy (kc_kennylau):

Simplify 9x-7i>3(3x-7u).

OpenStudy (kc_kennylau):

@amistre64 @DDCamp @Mr.ClayLordMath @Confucious @e.mccormick

OpenStudy (kc_kennylau):

@fortune_paul @xjakester @mathcalculus @miamilove14

OpenStudy (kc_kennylau):

@ash2326 @bibby @CashBoy27 @Decart @e.cociuba @Falco276 @Gabylovesyou @helplesspenguin @ikram002p @J-Cross18 @kittiwitti1 @Ledah @montrealgurl @norasparkle4 @PurplePanda312 @razor99 @suzy4321 @TTP @u71nfu @waterpologoalie @xjakester @Zale101

razor99 (razor99):

Hey let me help u with that

OpenStudy (kc_kennylau):

thanks :D

razor99 (razor99):

okay hold no i will have to do it on a rough sheet

razor99 (razor99):

*on

OpenStudy (kc_kennylau):

ok :)

razor99 (razor99):

wait is that 7i

razor99 (razor99):

Hello u there

OpenStudy (j-cross18):

yes?

razor99 (razor99):

okay

OpenStudy (kc_kennylau):

?

OpenStudy (kc_kennylau):

that's 9x-7i>3(3x-7u) what's the problem

razor99 (razor99):

OH ITS OKAY I MEAN DO WE HA VE TO SOLVE FOR X OR I

razor99 (razor99):

srry for the caps lock

OpenStudy (kc_kennylau):

just have to simplify the ineq :)

OpenStudy (kc_kennylau):

you have any idea? :o

razor99 (razor99):

yea first did u remove the bracket okay

razor99 (razor99):

Imean like this 9x-7i<3(3x-7u) solve the brackets

OpenStudy (kc_kennylau):

so it's 9x-7i<9x-21u?

OpenStudy (kc_kennylau):

oh wait the sign is greater

OpenStudy (kc_kennylau):

so it's 9x-7i>9x-21u?

razor99 (razor99):

yea lol srry about that now can u solve it

OpenStudy (kc_kennylau):

help me... :/

OpenStudy (kittiwitti1):

@razor99 already helped you, what are you talking about?

OpenStudy (kc_kennylau):

what after that

OpenStudy (kc_kennylau):

what after 9x-7i>9x-21u

OpenStudy (kc_kennylau):

oh do i subtract 9x from both sides?

OpenStudy (kc_kennylau):

so it becomes -7i>-21u?

OpenStudy (kc_kennylau):

then is it done?

razor99 (razor99):

Yes very good

OpenStudy (kc_kennylau):

done?

razor99 (razor99):

nope

OpenStudy (kc_kennylau):

what to do?

OpenStudy (kc_kennylau):

@razor99 here?

OpenStudy (kittiwitti1):

He's here, be patient

OpenStudy (kc_kennylau):

can you help me?

OpenStudy (kc_kennylau):

what to do after that?

razor99 (razor99):

Um keep t\i and take the other remianing thigs to other side okay

razor99 (razor99):

i mean the i

OpenStudy (kc_kennylau):

-7i>-21u -7i+21u>0?

OpenStudy (kc_kennylau):

that seems to be complicating the problem...

razor99 (razor99):

yes

OpenStudy (kc_kennylau):

oh wait

OpenStudy (kc_kennylau):

7 and 21 have common factor

OpenStudy (kc_kennylau):

so we could divide both sides by 7?

razor99 (razor99):

yea they have

OpenStudy (kc_kennylau):

-i>-3u?

OpenStudy (kc_kennylau):

can i just take out the negative sign from both sides?

OpenStudy (kc_kennylau):

anyone?

OpenStudy (kittiwitti1):

Give him time to answer @kc_kennylau

OpenStudy (kc_kennylau):

ok sorry but can you help me? what to do after -i>-3u can i just take out the negative sign from both sides? :)

razor99 (razor99):

ye

razor99 (razor99):

srry for the late reply i am helping my mom

OpenStudy (kc_kennylau):

it's fine :)

razor99 (razor99):

yea u can take it

OpenStudy (kc_kennylau):

and do i have to reverse the sign?

OpenStudy (kittiwitti1):

@kc_kennylau, don't forget to give @razor99 a medal (:

OpenStudy (kc_kennylau):

just given :)

OpenStudy (kc_kennylau):

so the answer is...?

OpenStudy (kittiwitti1):

^_^

OpenStudy (kittiwitti1):

So from what I see, \[\sqrt{-1}=3u\] since i = sqrt -1, am I right?

OpenStudy (kc_kennylau):

that i is just a random variable :)

OpenStudy (kc_kennylau):

and it's not equal it's an ineq

OpenStudy (kittiwitti1):

Then is it this one\[i\ge3u\]or this one?\[i\le3u\] I wouldn't know how you'd solve for two unknown variables at once though.

OpenStudy (kc_kennylau):

nah it's just simplifying... (and it's an inequality where equal's not involved)

OpenStudy (kittiwitti1):

Oh. So it's either \[i\lt3u\] or this one?\[i\gt3u\]

OpenStudy (kc_kennylau):

which one?

razor99 (razor99):

Thank u kittiwitti1 C:

razor99 (razor99):

for helping him

OpenStudy (kc_kennylau):

thanks you guys so much for helping me

OpenStudy (kc_kennylau):

so the answer is?

razor99 (razor99):

AND kC thank u too

OpenStudy (kc_kennylau):

so the answer is...?

OpenStudy (kittiwitti1):

Well since you divide both sides by negatives, I think the sign stays the same. I don't know which sign you started out with though.

OpenStudy (kittiwitti1):

No, thank YOU @razor99 for providing the foundation! (:

OpenStudy (kc_kennylau):

why don't you guys just tell me the answer.... i started with -i>-3u so it's...?

OpenStudy (kittiwitti1):

\[i\gt3u\]

OpenStudy (kc_kennylau):

don't need to reverse the sign?

OpenStudy (kittiwitti1):

No, it's only if positive divides by negative, and both sides are negative. I think.

OpenStudy (kc_kennylau):

ic...

OpenStudy (kc_kennylau):

lemme finish my lunch first my mom is yelling at me outside

OpenStudy (kittiwitti1):

Your lunch? That's late... o_o

OpenStudy (kc_kennylau):

hi i'm back :)

OpenStudy (kc_kennylau):

@kittiwitti1 so the answer is i<3u?

OpenStudy (kittiwitti1):

Yep should be

OpenStudy (kc_kennylau):

thx so much :)

razor99 (razor99):

Hey guyz check out this one C:

OpenStudy (kc_kennylau):

wt is dat

razor99 (razor99):

Oh u cant view the real one lol srry

razor99 (razor99):

So there is this person who is saying he needs an i phone 5 to santa clause

razor99 (razor99):

U know what his reply was

OpenStudy (kc_kennylau):

what

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