Mathematics
20 Online
OpenStudy (anonymous):
1 2/3 + 5 3/8=?
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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
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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?
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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
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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
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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