$109.07sqrt ? - frac{{61}}{{21.02}} imes ? = 47.96sqrt ?$

$109.07sqrt ? - frac{{61}}{{21.02}} imes ? = 47.96sqrt ?$

$109sqrt ? - 48sqrt ? approx frac{{61}}{{21}} imes ?$

$61sqrt ? = frac{{61}}{{21}} imes ?$

$? = 441$