SOLUTION: A square plywood platform has a perimeter which is 7 times the length of a side,decreased by 18. What is the length of a side?

Algebra ->  Customizable Word Problem Solvers  -> Unit conversion -> SOLUTION: A square plywood platform has a perimeter which is 7 times the length of a side,decreased by 18. What is the length of a side?      Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


    

Question 405238: A square plywood platform has a perimeter which is 7 times the length of a side,decreased by 18. What is the length of a side?
Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!

A square plywood platform has a perimeter which is 7 times the length of a side a,decreased by 18.
perimeter=P

P=4a

4a=7a-18

18=7a-4a
18=3a
18%2F3=a
a=6