Mathematics
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OpenStudy (hellomynameiskam):
Which fraction is greater than - 7/12?
A. - 3/4
B. - 13/18
C. - 2/3 <--- my answer
D. - 5/9
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OpenStudy (welshfella):
- 2/3 can be written as -8/12
OpenStudy (welshfella):
is that greater than -7/12?
OpenStudy (hellomynameiskam):
Ohh. So can A be the answer?
OpenStudy (anonymous):
a can also be shown as 9/12
OpenStudy (welshfella):
i thimk you might be guessing
what is -3/4 as a fraction over 12?
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OpenStudy (welshfella):
@Nivux - dont forget the negative
OpenStudy (anonymous):
oh thanks so much @welshfella
i totally missed that sorry both of you guys
OpenStudy (anonymous):
so a can be shown as -9/12
OpenStudy (anonymous):
And sorry again
OpenStudy (welshfella):
yes and thats is less than -7/12 so its not A
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OpenStudy (welshfella):
the other 2 b and d are not so easy to compare with -7/12
OpenStudy (welshfella):
i suggest you convert -7/12 to a fraction over 36
and do the same with -13/18 to compare with B
OpenStudy (welshfella):
-7/12 * 3/3 = -21/36
OpenStudy (welshfella):
now multiply -13/18 by 2/2
OpenStudy (hellomynameiskam):
-26/36
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OpenStudy (welshfella):
right so comparing -26/36 with -21/36
which is greater?
OpenStudy (welshfella):
note we have negatives here
OpenStudy (hellomynameiskam):
- 13/18 ?
OpenStudy (hellomynameiskam):
d ?
OpenStudy (welshfella):
- I had a brainstorm then
No - 21/36 or -7/12 is greater
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OpenStudy (welshfella):
d is correct
note with negative numbers the smaller numerator is greater
OpenStudy (welshfella):
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