Question

1 supra 4 + 13 supra 16

Answer 1

1/4 + 13/16 = 4/16 + 13/16 = (4+13)/16 = 17/16 

Answer 2

$\frac{1}{4} + \frac{13}{16} = \frac{4+13}{16} = \frac{17}{16}$