LCD is 6t?
7/3t = 1/6
thus 1/3t is 1/7 of 1/6 so 1/42 and 2/t = 6/7 of 1/6 so 1/7 or 6/42
the lcd is either 3t or 42 (t = 14)
(1 + 6)/3t
= 7/3t so I guess the LCD = 3t?