The perimeter of a rectangle parking lot is 146 meters find the dimension of the lot if the length is 7 meters less than 4 times the width

Respuesta :

146=2(l)+2(w)    Let 4w-7=l
146=2(4w-7)+2w
146=10w-14       Add 14 to both sides
160=10w            Divide by 10
16=Width           Plug width back into the formula
57=Length