Question 315229
the length of a rectangular picture is seven inches longer than the width. find the length and width if the perimeter of the picture is 62 inches

length L = width W + 7
perimeter P = 62 = 2(L + W) = 2L + 2W
62 = 2L + 2W
31 = L + W
31 = (W + 7) + W
31 = 2W + 7
24 = 2W
12 inches = W
so L = 19 inches