[tex]\dfrac{2}{3}ns=G\ \ \ \ |\text{multiply both sides by 3}\\\\2ns=3G\ \ \ \ \ |\text{divide both sides by 2n}\neq0\\\\\boxed{s=\dfrac{3G}{2n}}[/tex]
----------------------------------------------------------------------------------------------------
[tex]\dfrac{2}{3ns}=G\\\\\dfrac{2}{3ns}=\dfrac{G}{1}\ \ \ \ |\text{cross multiply}\\\\(3ns)(G)=(2)(1)\\\\3nGs=2\ \ \ \ |\text{divide both sides by 3nG}\neq0\\\\\boxed{s=\dfrac{2}{3nG}}[/tex]
