Question 233680
Length of one base = x

Lenght of other base = 2x - 3

Altitude = 14

Area = 1/2 (sum of the bases) X Altitude

63 = 1/2 ( x + 2x - 3) X 14

63 = 1/2 (3x - 3) X 14

63 = 7 (3x - 3)

9 = 3x - 3

12 = 3x

x = 4

other base = 2x - 3 = 2(4)-3 = 8 - 3 = 5