5/6(x−1)=4
5/6x - 5/6 = 4|* 6
5x - 5 = 24
5x = 24 + 5
5x = 29|: 5
x = 29/5
x = 5 4/5
56x − 1 = 4
56x = 4+1
56x = 5|: 56
x = 5/56