6 2/3-(x+1/4)=2 1/6 С решением
х=4 1/4
6 2/3-(x+1/4)=2 1/6 x+1/4 = 6 2/3 - 2 1/6 x + 1/4 = 6 4/6 - 2 1/6 x + 1/4 = 4 3/6 x = 4 1/2 - 1/4 x = 4 2/4 - 1/4 x = 4 1/4