Question

Выразите из данной разности R:
(V1/R)-((V2)/(R-d))=0

Answer 1

$frac{ V_{1} }{R}- frac{ V_{2} }{R-d} =0$
$frac{ V_{1} }{R} = frac{ V_{2} }{R-d}$ пропорция
$V_{1}*(R-d)= V_{2} *R V_{1}*R- V_{1}*d= V_{2} *R V_{1} *R- V_{2} *R= V_{1}*d R*( V_{1}- V_{2} ) = V_{1}*d$
$R= frac{ V_{1}*d }{ V_{1}- V_{2} }$