√12+√(1/27)+√(1/3)
=√12+√27/27+√3/3
=√12+3√3/27+√3/3
=√12+(3√3/27+√3/3)
=√12+(3√3/27+9√3/27)
=√12+12√3/27
=2√3+12√3/27
=54√3/27+12√3/27
=66√3/27
=22√3/9