Mathematics
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OpenStudy (anonymous):
What is 1 3/14 - (-2 1/7)?
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OpenStudy (caozeyuan):
well, -- is +, right?
OpenStudy (anonymous):
1 3/14 minus (-2 1/7)
OpenStudy (refrac532):
That can be simplified to...?
OpenStudy (anonymous):
I got -1 1/13 for my answer, correct?
OpenStudy (refrac532):
Do you mean -1 1/14?
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OpenStudy (anonymous):
uh no
OpenStudy (refrac532):
Then what are you doing xD
OpenStudy (caozeyuan):
you have two - thats just a +
OpenStudy (anonymous):
Ok I'll show you what I did
OpenStudy (refrac532):
You can change 1/7 to match the other denominator
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OpenStudy (caozeyuan):
if you minus a number you just add the opposite, so if you minus negative you add positive and thats easier
OpenStudy (refrac532):
For example, 1 - (-3) can be changed to 1 + 3, or 4.
OpenStudy (anonymous):
1 3/14 = 15/7 (-2 1/7) = 17/14
LCD Is 14
17/14 - 30/14= -13/14
Divide and get -1 1/13
OpenStudy (caozeyuan):
so many error, what are you doing?!
OpenStudy (refrac532):
No, you need to add the mixed fractions.
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OpenStudy (refrac532):
Are you sure you know what you're doing?
OpenStudy (caozeyuan):
add them up!
OpenStudy (anonymous):
I know what I'm doing i'm supposed to subtract
OpenStudy (caozeyuan):
1+2=3,3/14+2/14=5/14, so answer is 3 5/14
OpenStudy (anonymous):
isn't that correct???
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OpenStudy (caozeyuan):
ok, basics, what is 1-(-1)?
OpenStudy (anonymous):
Oh nvm I get it now
OpenStudy (anonymous):
I forgot about the subtracting rule thing
OpenStudy (refrac532):
I think you also forgot about common denominators
OpenStudy (refrac532):
In no way is 13 related to 7 and 14
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OpenStudy (caozeyuan):
np, I brain fart a lot too
OpenStudy (anonymous):
@caozeyuan So is 3 5/14
OpenStudy (caozeyuan):
great!