[3/4х-2\3]x15=8 .............................
3/4х-2/3=8/15 3/4х=8/15+2/3=(8+10)/15=18/15=6/5 х=6/5:3/4=(6*4)/(5*3)=8/5=1 3/5 х=1 3/5=1,6