SOLUTION: when 189 is subtracted from five times a certain number, the result equal to one half of the original number. Find the number.

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Question 677587: when 189 is subtracted from five times a certain number, the result equal to one half of the original number. Find the number.
Answer by ptaylor(2198) About Me  (Show Source):
You can put this solution on YOUR website!
Let x=the certain number; 5x=5 times the certain number
Sooooo
5x-189=(1/2)x subtract 5x from each side
-189=-5x+(1/2)x
-4.5x=-189
x=42-----------the certain number
CK
(5*42)-189=(1/2)*42
210-189=21
21=21
Hope this helps---ptaylor