3/4х-1 1/2+ 1/5х=1 2/3

3/4x-1 1/2+ 1/5x=1 2/3 3/4x+1/5x=1 2/3+1 1/2 15/20x+4/20=1 4/6+1 3/6 19/20x=3 1/6 x=3 1/6:19/20 x=10/3=3 1/3