SOLUTION: If a number is multiplied by 7 more than 3 times that number, the result is 20. Find the number.

Algebra ->  Human-and-algebraic-language -> SOLUTION: If a number is multiplied by 7 more than 3 times that number, the result is 20. Find the number.      Log On


   

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) About Me  (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
.....................
Delighted to help.
-Reading Boosters
Website: www.MyHomeworkAnswers.com
Wanting for others what we want for ourselves.