Intermediate algebra, concepts and graphs
posted by Lisa on .
How would I figure out another rectangle equation? The length of a rectangle is 4 meters less than 3 times the width. The perimeter is 24 meters. Find the width.

P = 2 l + 2w
L = 3w4
24 = 2(3w4) + 2w
24 = 6w 8 + 2w
24 = 8w 8
24 + 8 = 8w8 +8
32 = 8w
8w/8 = 32/8
w = 4 
This is the answer I came up with and the website for my homework says it is wrong. I thought I was doing this equation wrong. Thank you.