Question 612849
{{{ 3/sqrt(3) - 2/sqrt(27) }}}
= {{{ 3/sqrt(3) - 2/3sqrt(3) }}}
= {{{ 3*sqrt(3)/3 - 2sqrt(3)/9 }}}
= {{{ 9*sqrt(3)/9 - 2sqrt(3)/9 }}}
= {{{ 7sqrt(3)/9 }}}