19 1 18 1 20 (2 фото)

19 1 18 1 20
(14, 2 / 1,2 - 1,05)Х 1,6 =. (1/13-1/14 )×(1/14-1/6)×(1/15-1/16):(1/16-1/17). (1/13+1/14):(1/13-1/14)*(1/27)=. Решить 1+1/(1+1/(1+1/2)).