Question

8/15y-3/10y+3/5y=0,5

Answer 1

8/15y-3/10y+3/5y=0,5    *30y16-9+18=15y25=15yy=5/3 

Answer 2

$frac{8}{15y} - frac{3}{10y} + frac{3}{5y} =0,5 \ \ \ frac{8*2}{30y} - frac{3*3}{30y} + frac{3*6}{30y} =0,5 \ \ \ frac{16}{30y} - frac{9}{30y} + frac{18}{30y} =0,5 \ \ \ frac{16-9+18}{30y} =0,5 \ \ \ frac{25}{30y} = frac{5}{10} \ \ \ 30y*5=25*10 \ \ \ 150y=250 \ \ \ y=250 : 150 \ \ \ y = frac{5}{3} \ \ \ y=1 frac{2}{3}$