(5/6*x-1/5)*8/9=4/15

(5/6*x-1/5)*8/9=4/15
5/6х-1/5=4/15:8/9
5/6х-1/5=4/15*9/8
5/6х-1/5=1/5*3/2
5/6х-1/5=3/10
5/6х=3/10+1/5
5/6х=3/10+2/10
5/6х=5/10
5/6х=1/2
х=1/2:5/6
х=1/2*6/5
х=1/1*3/5
х=3/5