Question 720546
square root 3x + 2 - square root 2x + 7 = 0


Without the braces for rendering,
sqrt(3x+2)-sqrt(2x+7)=0


As rendered, triple curly braces at left and right, 
{{{sqrt(3x+2)-sqrt(2x+7)=0}}}


{{{sqrt(3x+2)=+sqrt(2x+7)}}} and then square both sides.
{{{3x+2=2x+7}}}
{{{x=5}}}.