SOLUTION: if a number is decreased by six in the result is multiplied by three then the answer is 15 find the unknown number

Algebra ->  Customizable Word Problem Solvers  -> Numbers -> SOLUTION: if a number is decreased by six in the result is multiplied by three then the answer is 15 find the unknown number       Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


    

Question 1075956: if a number is decreased by six in the result is multiplied by three then the answer is 15 find the unknown number
Answer by addingup(3677) About Me  (Show Source):
You can put this solution on YOUR website!
a number, let it be x:
x minus 6 times 3 = 3(x-6) equals 15:
3(x-6) = 15 distribute the 3 (Distributive Properties of Multiplication)
3x-18 = 15
3x = 33
x = 11
-----------------
check:
11-6 = 5; 5 x 3 = 15 Correct
:
John