Hi,
Note: Using the illustration for reference, a median 'EF' would
connect the midpoints of the legs AD and BC AND:
median EF = 14 = (AB + CD)/2 (the average length of the bases)
14 = [(x-6) + (3x + 2)]/2
28 = 4x - 4
32 = 4x
8 = x
Length of CD (3x + 2) = 26