SOLUTION: If a number is multiplied by 7 more than 3 times that number, the result is 20. Find the number.
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Question 672679: If a number is multiplied by 7 more than 3 times that number, the result is 20. Find the number.
Answer by ReadingBoosters(3246) (Show Source): You can put this solution on YOUR website!
n(3n+7) = 20
...
3n^2 + 7n - 20 = 0
(3n-5)(n+4)=0
...
n = 5/3
n = -4
.....................
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