SOLUTION: How do I solve? The reciprocal of 4 plus the reciprocal of 5 is the reciprocal of what number?

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Question 141560: How do I solve?
The reciprocal of 4 plus the reciprocal of 5 is the reciprocal of what number?
Answer by edjones(8007) About Me  (Show Source):
You can put this solution on YOUR website!
1/4 + 1/5
=5/20 + 4/20
=9/20