Question

aratati ca : $2^{-1}$ + $2^{-2} }$=0,75

Answer 1

$\frac{1}{2}+ \frac{1}{4} = \frac{75}{100}$
$\frac{2}{4} + \frac{1}{4} = \frac{3}{4}$
$\frac{2+1}{4} = \frac{3}{4} \frac{3}{4} = \frac{3}{4}$ (adevarat)