Найдите x из пропорции x / 17 = 102 / 3,4( 2)266/38 = 105/x
x 102 1) --- = ----- = > x=17*102/3.4=510 17 3.4 266 105 2) ------- = -------- => x=106*38/266=4028/266=2014/133= (1995+19)/133= 38 x = 15 целых 19/133 = 15 целых 1/7