Question 403209
{{{sqrt(x-3)-7=0}}}
{{{sqrt(x-3)=7}}}
{{{(sqrt(x-3))^2=7^2}}}
{{{x-3=49}}}
{{{x=49+3}}}
{{{x=52}}}
Let check answer
{{{sqrt(52-3)-7=0}}}
{{{sqrt(49)-7=0}}}
{{{7-7=0}}}
{{{0=0}}} correct
Answer {{{x=52}}}