SOLUTION: a square plywood platform has a perimeter which is 7 times the lenght of side, decreased by 21. find the lenght of a side

Algebra.Com
Question 234518: a square plywood platform has a perimeter which is 7 times the lenght of side, decreased by 21. find the lenght of a side
Answer by nyc_function(2741)   (Show Source): You can put this solution on YOUR website!
A square is equal on all 4 sides.
The perimeter = 7s - 21
The perimeter of a square formula is P = 4s, where s represents the side of the square.
7s - 21 = 4s
Solve for s and you will find the answer.
Can you do it now?

RELATED QUESTIONS

A square plywood platform has a perimiter which is 10 times the lenght of a side... (answered by weepingwillowcats)
A square plywood platform has a perimeter which is 7 times the length of a side,... (answered by jainenderkapoor)
A square plywood platform has a perimeter which is 7 times the length of a side,decreased (answered by MathLover1)
a square plywood platform has a perimeter which is 11 times the length of a side,... (answered by drk)
A square plywood platform has a perimeter which is 8 times the length of a side,... (answered by chana)
A square plywood platform has a perimeter which is 8 times the length of a side,... (answered by Fombitz)
A square plywood platform has a perimeter which is 9 times the length of a side,... (answered by ikleyn)
A square plywood has a perimeter which is 7 times the length of a side decreased by 21.... (answered by solver91311)
A square plywood platform has a perimeter which is 9 times the length of a side,... (answered by checkley77)