SOLUTION: if a number is decreased by 6,and the result is multilied by 3,than the answer is 15.find the unknown number

Algebra ->  Customizable Word Problem Solvers  -> Numbers -> SOLUTION: if a number is decreased by 6,and the result is multilied by 3,than the answer is 15.find the unknown number       Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


    

Question 1084504: if a number is decreased by 6,and the result is multilied by 3,than the answer is 15.find the unknown number
Answer by Cromlix(4381) About Me  (Show Source):
You can put this solution on YOUR website!
Hi there,
Make the unknown number x
a number is decreased by 6
(x - 6)
and the result is multiplied by 3
3(x - 6)
then the answer is 15.
3(x - 6) = 15
Multiply out
3x - 18 = 15
3x = 15 + 18
3x = 33
x = 11
Hope this helps :-)