Answer :

luana
[tex]N*3,25=325\ \ \ \ | divide\ by\ 3,25\\\\ N=100\\\\Solution\ is\ N=100.[/tex]
Simply write it as:  

N*3.25 = 325
3.25N   = 325  Divide both sides by 3.25.

N  = 325/3.25

N = 100.

Hurray.

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