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OpenStudy (anonymous):
if a-b=10,a+c=20,and b-c=30,then a=?
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OpenStudy (ilovewolf):
do you have a answer choice?
OpenStudy (anonymous):
yes
OpenStudy (anonymous):
A) 4 B)2 C)1 D)0
OpenStudy (ilovewolf):
etake a random guess
OpenStudy (anonymous):
?
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OpenStudy (beccasmith):
It would be d
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