SOLUTION: 8/x=2/5 x= can you explain how to do it and also the answer I save this info to study x/2=5/15 x=

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Question 700741: 8/x=2/5
x=
can you explain how to do it and also the answer I save this info to study
x/2=5/15
x=
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
8/x=2/5
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The shortcut is to "cross multiply."
2x = 8*5
2x = 40
x = 20
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