2 2/3:3 1/3=х:3,5 найдите неизвестный член пропорции

8/3 : 10/3 = х : 3,50,8 = х : 3,5х = 2,8

3 1/3*х = 2 2/3* 3,510/3*х = 8/3*35/1010/3*х = (8*35)/(3*10)10/3*х= 28/3х = 28/3 : 10/3х = 28/3 * 3/10х = 28/10х = 2,8