Respuesta :

2     9     1

   x      x

3     4      3

The 2 and the 4 cross out each other making it a 1 and a 2  

9 and 3 cross each other making it 1 and 3

The 3 and 3 cross out each other making 1 and 1

   

1     1     1

   x      x

1     2      1

making it 1/2

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