1/9{1/7[1/5(x+2/3+4)+6]+8}=1
1/7[1/5(x+2/3+4)+6]+8=9
1/7[1/5(x+2/3+4)+6]=1
1/5(x+2/3+4)+6=7
1/5(x+2/3+4)=1
x+2/3+4=5
x+2/3=1
x=1/3
1/9{1/7[1/5(x+2/3+4)+6]+8}=1
1/7[1/5(x+2/3+4)+6]+8=9
1/7[1/5(x+2/3+4)+6]=1
1/5(x+2/3+4)+6=7
1/5(x+2/3+4)=1
x+2/3+4=5
x+2/3=1
x=1/3