(5/8x - 1/5) * 3/4 = 3/4 3/5z + 2/3z - 3 = 4/5
(5/8х-1/5)*3/4=3/4 5/8х-1/5=3/4:3/4 5/8х-1/5=1 5/8х=1+1/5 5/8х=6/5 х=6/5:5/8 х=48/25 х=1 23/48 3/5z+2/3z-3=4/5 19/15z-3=4/5 19/15z=4/5+3 19/15z=24/5 z=24/5:19/15 z=4