Question

what should be added to 11 upon 48 to get 13 upon 16?​

Answer 1

11/48+x=13/16

x=13/16-11/48

x=28/48

x=7/2

so 7/12 should be added to 11/48 to get 13/16  

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Answer 2

so 7/12 is the number added to 11/48 to get 13/16