Question

X=(1i1/6-1/9):(1 i 1/3-1/6=
y=(1/7-1/3)*0.35-1i1/3:(-1i1/2)

Answer 1

X = (1 1/6 - 1/9) : (1 1/3 - 1/6) = 
      (1 3/18 - 2/18) : (1 2/6 - 1/6) =
       1 1/18 : 1 1/6 =
         19/18 : 7/6 =
         19/18 * 6/7 = 
          19/3 * 1/7 = 19/27 

y = (1/7 - 1/3) * 0,35 - 1 1/3 : (-1 1/2) =                 (0,35= 35/100=7/20)
       (3/21 - 7/21) * 7/20 - 4/3 : (-3/2) =
       - 4/21 * 7/20 - 4/3 * (-2/3) =
        -1/3 * 1/5 - (-8/9) =
         -1/15 + 8/9 = 
         -3/45 + 40/45 = 37/45