Question 135697
I'll assume you mean  {{{sqrt(2x-3) - 3 = 0}}}
{{{sqrt(2x-3) = 3}}}
{{{(sqrt(2x-3))^2 = 3^2 }}}
{{{2x-3 = 9 }}}
{{{2x = 12}}}
{{{x = 6}}}

check your answer. Does sqrt(12-3) - 3 = 0 ??? yes it does