Well written and well explanatory pls!!!

Let S be a multiplicative subset of a commutative ring R with identity . If I is an Ideal in R, then S'( Rad I ) = Rad (S') INT. You may lose on ( Jo = r /s = SH( TAstorm) = 0 HINT: ( You may we rm/ sm E S I => rm/ sm = 8/s' where r'E I and s'Es and rm / Jm = 1 1/ s' => s" ( rms1 - rijm ) = 0 for some s" ES, and rms's " ( J => (rs's1)" _ my's" (s 1 )mad (s") m- E I, and cls = rs's"/ss's!!)