Question

Solve.
( I have NO clue ware to even begin on this one...)
(problum will be drawn in the comments in just a bit)

Answer 1

How would you undo the -1/3?

Answer 2

I have no clue D: thats why I need help

Answer 3

@Emmalineh123 @Manny77

Answer 4

Allow me to rephrase that. In order to undo a fraction multplied by a variable (-1/3b) what would we multiply it by in order to get the -1/3b to be 1b?

Answer 5

help please? Q~Q

Answer 6

Are you asking for help or for answers? Because this website is for help, not for answers.

Answer 7

uuuh for help to get the answer of course o_O

Answer 8

Then you will have to contribute to it. Think about what you'd need to multiply -1/3 by to equal 1.

Answer 9

We aren't going to be here when you have a test to take. So you need to be able to do it by yourself. I'm helping you figure it out.

Answer 10

i think you should start simpler. if you want 1/3 to become 1 how many thirds are in a whole

Answer 11

3 O:

Answer 12

right, you need three times as many thirds to make one. so if you want 1 whole B, then how many times more 1/3B's do you need.

Answer 13

3 O:...?

Answer 14

exactly. now a rule of algebra is that whatever is done to one side of the equal sign has to be done to the other. an example
1=1, so if you want to add another to the right hand side you need to add 1 to the other as well to keep it true
like 1+1 = 1+1
same with multiplying. if you multiply 2 on one side you need to multiply 2 on the other

Answer 15

2*1 =2*1. with your problem you just said you need 3 times as many B's on the left hand side. but if you triple one side what would happen to the other

Answer 16

hmmm so according to what your saying if I understand correctly b is 3...?

Answer 17

not exactly, im saying if you want to solve for B you need to get one whole B on one side.

Answer 18

and you said there are 3 thirds in a whole. so to get one third into a whole, then you have to multiply by 3. B doesnt equal 3,

Answer 19

so how can you get -1/3B = 9, to be -B =(this side of the equation)

Answer 20

the right hand side still needs solved for and we arent there yet, we are just working the left hand side.

Answer 21

27 O-O... 27???? :OOO ... 27 >:DDDD

Answer 22

very good. but. one last thing

Answer 23

now we have a -B = 27. so if negative B is Positive 27, what is Positive B?

Answer 24

wow wow wow. hold the phone O_____O that dose not make sense to me. why are you saying "-B" is be negative because it is on the same side of the equation as the"-1/3"...

Answer 25

so we got that 3 one thirds make a whole, but we have -1/3. so to get a whole here we need 3 negative1/3's, and that would equal -1

Answer 26

and wouldnt that make the positive b -27? o.O

Answer 27

yes it would

Answer 28

the key to any of these problems is to get your variable, in this case here B, to be a whole number so that it is easier to work with. so we had -1/3B, and we needed to get it to B some how. so the first step we took was to multiply it by 3 to make a whole. that got us to
-B. and remember earlier i said what you do to one side you do to the other.
(3)* -1/3B = 9(3) <---- here we multiplied both sides by 3. that is how you got the 27.
and 3*-1/3 = -1 so
-1B = 27
now we want it to be positive B, so to get a negative to be positive you multiply it by a negative, isnt that right.
(-1)* -1B = 27* (-1) <---- what we do to one side we do to the other, so multiplying both sides by -1
B = -27

Answer 29

thank you :DD that''s the first time anyone has put forth that much effort to help me out on open study.

Answer 30

its no trouble. i just hope it helped :)

Answer 31

it did :'D!