babbiedoll
babbiedoll
10-10-2014
Mathematics
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·show me how to solve this promble
m.2.7
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konrad509
konrad509
10-10-2014
[tex]\frac{2}{5}+(-\frac{9}{10})=\\ \frac{4}{10}-\frac{9}{10}=\\ -\frac{5}{10}=\\-\frac{1}{2}[/tex]
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