6 2/3-(x+0,25)=2 1/6
62/3 - x - 0,25 = 21/6 62/3 - 0,25 - 21/6= x 62/3 - 1/4 - 21/6 = x 248-3-42/12= x 203/12=x
6 2/3-х-0,25=2 1/6 6 2/3-0,25-2 1/6=х 6 2/3- 1/4=6 5/12 6 5/12 - 2 1/6=4 1/4 х=4 1/4