Math Help! I will medal and fan! First timer OS user :)

- anonymous

Math Help! I will medal and fan! First timer OS user :)

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- schrodinger

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- anonymous

##### 1 Attachment

- anonymous

Someone please help :/

- Vocaloid

hint:
(11/15) is about (10/15) which is equal to (2/3), so our answer should be somewhere between
(1/2) and 1

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## More answers

- anonymous

Okay what about the other one can ya kind help and guide me through..

- Vocaloid

4 and 3/4 rounds up to 5
7 and 2/17 rounds down to 7
5*7 = ?

- anonymous

5 *7 = 35

- Vocaloid

good, so the answer should be around 35

- anonymous

Awesome. I'm kinda new t this, do u mind helping with more :) I always do not ask for answers and like to learn. I only have 10 questions. we did two does 8 left. Please? @Vocaloid

- Vocaloid

sure.

- anonymous

Oh My! thanks so much!

- anonymous

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- Vocaloid

first find the least common multiple of 6 and 9

- anonymous

18

- Vocaloid

good, now we convert both fractions to a denominator of 18

- anonymous

right.

- Vocaloid

|dw:1443667980784:dw|

- Vocaloid

|dw:1443668011356:dw|

- Vocaloid

then convert 23/18 into a mixed number

- anonymous

Okay.. so it would be... 1 5/18

- Vocaloid

good!

- anonymous

ahh so whatever you do to he top do to the bottom?

- Vocaloid

yup!

- anonymous

Oh ok.

- Vocaloid

for the second one, convert both numbers to improper fractions

- Vocaloid

|dw:1443668335836:dw|

- Vocaloid

|dw:1443668362127:dw|

- anonymous

right. and the second number would be 185/12

- Vocaloid

good, now convert both to have the same denominator
the least common multiple of 12 and 8 is 24, so...

- Vocaloid

|dw:1443668542925:dw|

- anonymous

Ok Just a sec going to do on paper :)

- anonymous

Okay so the -87 one is 261/24?

- Vocaloid

don't forget the negative sign
-261/24

- anonymous

oops yeah

- Vocaloid

keep going

- anonymous

the second one is 370/24

- Vocaloid

good, now add the two fractions together
-261 + 370 = ?

- anonymous

-631

- Vocaloid

check your math carefully

- Vocaloid

hint: -261 + 370 = 370 - 261

- anonymous

oh sorry 731

- Vocaloid

still not right
370 - 261 = ?

- anonymous

109

- anonymous

sorry was adding :s

- Vocaloid

much better ^_^
so our fraction is 109/24, now we can convert that to a mixed number
109/24 = 4 13/24 (mixed number)

- anonymous

okay nice!

- anonymous

But I don't have any answer choices that say 4 13/24. do i simplify

- Vocaloid

huh, what are the answer choices then? is 109/24 a choice?

- Vocaloid

I hope I didn't make a mistake somewhere ;-:

- anonymous

nope.

##### 1 Attachment

- anonymous

see...

- Vocaloid

oh right I see what I did wrong|dw:1443669786964:dw|

- Vocaloid

we end up with 4 and 7/24

- anonymous

Ahh Okay I thought I had misunderstood something lol

- Vocaloid

ready to keep going?

- anonymous

Okay I sorry there is only 8 questions so we are at 5. Thanks again for helping and sticking around

- anonymous

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- Vocaloid

convert 5/8 and 3/10 to the same denominator, any ideas on where to start?

- anonymous

I wasn't typing i think its stuck lol

- anonymous

uh 80.

- Vocaloid

almost, we can do 40 instead

- anonymous

Yeah I just realized tht thx

- anonymous

okay.. |dw:1443670407961:dw|

- Vocaloid

good, so 25/40 minus 12/40 = ?

- anonymous

13/40

- Vocaloid

great! ready for the next one?

- anonymous

yup.

- Vocaloid

our fractions are 15/16 and 3/4
we can make the denominator 16
since 15/16 already has 16 as the denominator, all we need to do is convert 3/4 to have a denominator of 16

- anonymous

right so 12/16

- Vocaloid

great, lets keep going

- anonymous

so I subtract 12/16 and 15/16?

- Vocaloid

yeah, subtract

- Vocaloid

15-12= ?

- anonymous

is 3/16

- Vocaloid

good

- anonymous

Ok the reason I did 7 separate from 8 was because 8 is a work pad, which means is the same we just have to show our work which is no prob

- anonymous

##### 1 Attachment

- anonymous

their LCD is 12.

- anonymous

right?

- Vocaloid

right, but convert to mixed numbers first

- Vocaloid

|dw:1443671359350:dw|

- anonymous

aren't I suppose to multiply 10 and 12 then add 11?

- Vocaloid

|dw:1443671417880:dw|

- anonymous

I am so sorry I had to refresh nd it was loading for ever.

- Vocaloid

no worries ^_^

- anonymous

so the first one would be -131/12 and the second one would be 29/12

- Vocaloid

|dw:1443671791958:dw|

- Vocaloid

not quite

- Vocaloid

-29/4

- Vocaloid

now we have
-131/12 and -29/4
change the denominator to 12 now

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