Question 25372
Do you mean {{{1/(9y) = 20}}} or {{{(1/9)y= 20}}}


In either case, use the formula that says {{{a/b=c/d}}} means {{{ad = bc}}}


If you meant, {{{1/(9y) = 20}}} {{{1/(9y) = 20/1}}} 
then you have 180y = 1, so {{{y = 1/180}}}


If you meant, {{{(1/9)y= 20}}}, 
then you have {{{y/9=20/1}}}, which gives you {{{y = 180}}}.


It all depends upon where you meant to put the y!


R^2 at SCC