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4 3/7-1 3/(14)=?+2 3/(28) 1 3/(28) (b) ...

`4 3/7-1 3/(14)=?+2 3/(28)` `1 3/(28)` (b) `3 1/(14)` (c) `3 3/(14)` (d) `3 1/(28)` (e) None of these

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