Question 65858
1/r=1/s+1/t....solve for s
{{{1/r=1/s+1/t}}}
{{{1/r-1/t=1/s}}}
{{{t/rt-r/rt=1/s}}}
{{{(t-r)/rt=1/s}}}
{{{((t-r)/rt)^(-1)=(1/s)^(-1)}}}
{{{rt/(t-r)=s}}}
{{{highlight(s=rt/(t-r))}}}

w=a^2/t.....solve for t
{{{tw=a^2t/t}}}
{{{tw=a^2}}}
{{{tw/w=a^2/w}}}
{{{highlight(t=a^2/w)}}}
Happy Calculating!!!