# algebra help

posted by
**sara** on
.

I am really confused on this question can some one help me out please

the length of a rectangular playing field is 5 ft less than twice its width If the perimeter of the playing field is 230 ft. find the length and width of the field.

I believe i am suppose to start with

P+2w+2L

I am lost after that please help

2L + 2W= P

but L+5= 2w

so

2L + L+5= P so figure what L is.

lets see if i am done this right

2L+L+5=230

3L+5=230

3L=-5+230

3L=225

3L/3=225/3

L=225/3

L=75

did I do this right

Then you must calculate W.

Then see if 2L + 2W = 230.