х+х+ 2 3/7+ 5/14х= 4242 5/14х= 424- 2 3/72 5/14х= 423 7/7- 2 3/72 5/14х= 421 4/7х= 421 4/7: 2 5/14х=2951/7* 14/33х= 5902/33х= 178 28/33- первое число.178 28/33+ 2 3/7= 178 196/231+ 2 99/231= 180 295/231= 181 64/231- второе число.178 28/33* 5/14= 5902/33* 5/14= 29510/462=63 404/462= 63 202/231- третье число.Проверка:178 28/33+181 64/231+63 202/231=178 196/231+181 64/231+63 202/231=422 462/231=422+2= 424