Mathematics
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OpenStudy (benlindquist):
Medals rewarded. Have some questions
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rebeccaxhawaii (rebeccaxhawaii):
on ?
OpenStudy (benlindquist):
the sum of -3/8 and -4/13
OpenStudy (benlindquist):
@rebelbluebeetle
rebeccaxhawaii (rebeccaxhawaii):
okay well you will be adding the two and your answer will be negative
rebeccaxhawaii (rebeccaxhawaii):
first find the common denominator
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rebeccaxhawaii (rebeccaxhawaii):
lets use 104
OpenStudy (benlindquist):
24
OpenStudy (anonymous):
-3/8 = 2.6
-4/13 = -0.307692308
i think 2.292307692? im sorry im no good at math :(
rebeccaxhawaii (rebeccaxhawaii):
thats no right
rebeccaxhawaii (rebeccaxhawaii):
not
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OpenStudy (benlindquist):
me either
rebeccaxhawaii (rebeccaxhawaii):
ill explain
OpenStudy (benlindquist):
is the answer -9/64
rebeccaxhawaii (rebeccaxhawaii):
no it is not
rebeccaxhawaii (rebeccaxhawaii):
so you got the LCD which is 64 because both 8 and 13 can go into it evenly
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OpenStudy (benlindquist):
ok
rebeccaxhawaii (rebeccaxhawaii):
\[-\frac{ 24 }{ 64 }-\frac{ 16 }{ 64 }=?\]
rebeccaxhawaii (rebeccaxhawaii):
so add the top two and the bottom remain 64
rebeccaxhawaii (rebeccaxhawaii):
remember your answer will be negative
OpenStudy (benlindquist):
40/64 = 20/25
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OpenStudy (benlindquist):
-20/25
rebeccaxhawaii (rebeccaxhawaii):
recheck your math whats 64 divided by 2
OpenStudy (benlindquist):
32
rebeccaxhawaii (rebeccaxhawaii):
indeed good job
OpenStudy (benlindquist):
but then its not showing up on my paper. the other possible answers are -2 7/24
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OpenStudy (benlindquist):
3/8
OpenStudy (benlindquist):
27/24
OpenStudy (benlindquist):
-9/64
OpenStudy (benlindquist):
or -1
rebeccaxhawaii (rebeccaxhawaii):
it would be 5/8
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OpenStudy (benlindquist):
ok
rebeccaxhawaii (rebeccaxhawaii):
\[\frac{ 40 }{ 64 }=\frac{ 5 }{ 8 }\]
OpenStudy (benlindquist):
✌🏻