SOLUTION: if 5 is added to a number and the sum is tripled, the result is 21 more than the number. Find the number.

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Question 626669: if 5 is added to a number and the sum is tripled, the result is 21 more than the number. Find the number.
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi,

if 5 is added to a numbehighlight%28x%29r and the sum is tripled, 

the result is 21 more than the number.

Question states***

 3(x+5) = x+ 21

 3x + 15 = x + 21

    2x = 6

     x = 3

****and...

3%2A8+=+3+%2B+21