SOLUTION: Could some on help me please. Simplify {{{sqrt20/5-1/sqrt5}}}

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Question 103894: Could some on help me please. Simplify
sqrt20%2F5-1%2Fsqrt5
Answer by checkley75(3666) About Me  (Show Source):
You can put this solution on YOUR website!
SQRT20/5-1/SQRT5
(SQRT20*SQRT5-1*5)/5SQRT5
(SQRT100-5)/5SQRT5
(10-5)/5SQRT5
5/5SQRT5
1/SQRT5 ANSWER.