If you would like to write the equation Y - 1 = 5/6 (x - 4) in standard form, you can do this using the following steps:
Y - 1 = 5/6 (x - 4)
Y - 1 = 5/6 x - 5/6 4
Y - 1 = 5/6 x - 10/3
Y - 5/6 x = 1 - 10/3
Y - 5/6 x = - 7/3 /6
6 Y - 5 x = - 14
The correct result would be 6 Y - 5 x = - 14.