у решите уравнение 6 2/3: 1 7/9x=0.48:1,2 

1 7/9x*0,48=6 2/3*1,216/9x*48/100=20/3*12/1064/75x=8x=8*75/64x=75/8x=9 3/8===============6 2/3:1 7/9x=0,41 7/9x=6 2/3:0,416/9x=20/3*10/416/9x=50/3x=50/3*9/16x=75/8x=9 3/8