Question

помогите пожалуйста...................................

Answer 1

$frac{11y}{20} =16:80 \ frac{11y}{20} =0.2 \ y=0.2cdot20:11 \ y= frac{4}{11}$

$7.2:2.7= frac{32y}{3} \ frac{32y}{3} = frac{72}{27} \ y= frac{72cdot3}{32cdot27} \ y=0.25$

$5.1:8.7= frac{34y}{29} \ frac{34y}{29} = frac{51}{87} \ y= frac{51cdot29}{34cdot87} \ y=0.5$

$frac{6y}{49} =50:245 \ frac{6y}{49} = frac{20}{245} \ y= frac{20cdot49}{6cdot245} \ y= frac{4}{6} =frac{2}{3}$