We have;
#22=y/(1-xe^y)#
#=>22-22xe^y=y#
#22-y=22xe^y#
#(22-y)/(22e^y)=x#
#x=(22-y)/(22e^y)#
Diff.w.r.t. #color(red)(y)# and #"using"color(blue)" Quotient
Rule"#
#(dx)/(dy)=(22e^yd/(dy)(22-y)-(22-y)d/(dy)(22e^y))/(22e^y)^2#
#=>(dx)/(dy)=(22e^y(-1)-(22-y)(22e^y))/(22e^y)^2#
#=>(dx)/(dy)=(22e^y(-1-22+y))/(22e^y)^2#
#=>color(red)((dx)/(dy))=(y-23)/(22e^y)to#,But , #[(dx)/(dy)=1/((dy)/(dx))]#
#=>color(red)((dy)/(dx))=(22e^y)/(y-23)#