Question

Continoarea va rog frumos!!

Answer 1

$\frac{9}{16} : \frac{75}{100} = \frac{1}{2} + \frac{x}{4}$
$\frac{9}{16} * \frac{100}{75} = \frac{2+x}{4}$
$\frac{900}{1200} = \frac{2+x}{4}$
$\frac{9}{12} = \frac{2+x}{4}$
$12(2+x)=9*4$
$24+12x=36$
$12x=36-24$
$x= \frac{12}{12} =1$