Question 207795
1)
{{{5 = sqrt(a) + 2}}}
{{{5-2 = sqrt(a)}}}
{{{3 = sqrt(a)}}}
{{{3^2 = (sqrt(a))^2}}}
{{{9 = a}}}

2)
{{{33 + 4*sqrt(a) = 6*sqrt(a) - 7}}}
{{{33+7 =  6*sqrt(a) -  4*sqrt(a)}}}
{{{40 = 2*sqrt(a)}}}
{{{40/2 = sqrt(a)}}}
{{{20 = sqrt(a)}}}
{{{20^2 =  (sqrt(a))^2}}}
{{{400 = a}}}
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