解析：∵30^x=2010=30*67,即30^(x-1)=67,
67^y=2010=67*30,即67^(y-1)=30,
∴30^(x-1)(y-1)=67^(y-1)=30,
∴(x-1)(y-1)=1
xy-x-y=0
x+y=xy
xy≠0,得1/x+1/y=1
∴2/x+2/y=2