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22-02-2017
Mathematics

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o+2a+b-2o-b+o so what is the answer

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apologiabiology apologiabiology

22-02-2017

assuming O=o

group then add like terms

1o+2a+1b-2o-1b+1o=
1o+1o-2o+2a+1b-1b=
0+2a+0=
2a

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