Х - 5/8 х Х = 5 4/10
Х - 5/8 х Х = 5 4/10; 1/1х-5/8х=54/10; 8/8х-5/8х=54/10; 3/8х=54/10; х=54/10*8/3; Х=72/5; х=14 2/5