Step-by-step explanation:
Length = L
Width = W
L = W + 7 -------- equation 1
Area = 60inches
LW = 60 --------- equation 2
(W + 7)W = 60
W² + 7W - 60 = 0
W² + 12W - 5W - 60 = 0
W(W + 12) -5(W + 12) = 0
(W + 12)(W - 5) = 0
W + 12 = 0 or W - 5 = 0
W = -12 or W = 5
length can't be negative.......
W = 5 inches.
From equation 1
L = W + 7
L = 5 + 7
L = 12 inches
