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Mathematics 20 Online
OpenStudy (anonymous):

1 2/3 + 5 3/8=?

OpenStudy (baldymcgee6):

are you allowed to use a calc?

OpenStudy (anonymous):

this is simple math

OpenStudy (anonymous):

I don't know fractions that is why I'm asking for help

OpenStudy (baldymcgee6):

it might be simple math, but she is obviously having trouble with it, or she wldnt be asking

OpenStudy (anonymous):

true

OpenStudy (baldymcgee6):

okay, so in order to add or subtract fraction, they need to have a common denominator

OpenStudy (tux):

\[\frac{ 3*1+2 }{ 3 }+\frac{ 8*5+3 }{ 8 }=your turn\]

OpenStudy (anonymous):

5/3 + 43/8?

OpenStudy (tux):

yes

OpenStudy (anonymous):

would I add the 5 and 43?

OpenStudy (anonymous):

I got 48/11

OpenStudy (baldymcgee6):

like i said you need a common denominator (bottom number) before you add

OpenStudy (anonymous):

how would I do that?

OpenStudy (baldymcgee6):

what number does both 3 and 8 go into evenly

OpenStudy (anonymous):

24

OpenStudy (baldymcgee6):

good. so what do you multiply 3 by to get 24?

OpenStudy (anonymous):

8

OpenStudy (anonymous):

:s

OpenStudy (baldymcgee6):

right, having 5/3 + 43/8.. multiply the first set by 8 and the second set by 3 to give you??

OpenStudy (anonymous):

40/24 + 129/24

OpenStudy (baldymcgee6):

good and since the denominators are now the same, you can write it as (40+129)/24

OpenStudy (anonymous):

169/24?

OpenStudy (baldymcgee6):

good

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