Question

How do you do this
The perimeter of a certain square is seven times the length of a side decreased by 12. Find the length of a side

Answer 1

perimeter, P, of a square = 4 x length of a side

Answer 2

So then what do you do

Answer 3

I'm thinking, sorry... doing more than 1 thing here.

Answer 4

Oh sorry I didn't mean to rush you or anything

Answer 5

so, I think its like:
P = 4L <<-- definition of perimeter
= 7L - 12 <<-- because the problem says so

Answer 6

Thank you

Answer 7

did you get the rest after that?

Answer 8

Yea

Answer 9

cool, glad to help :)