2472 : (315 -х:58) + 98 = 1102472 : ( 315 - х:58) = 110 -982472 : (315 - х:58) = 12315 - х:58 = 2472 :12315 - х :58 = 206х:58 = 315 -206х:58 = 109х= 109 *58х=6322проверим:2472 : ( 315 - 6322:58) + 98 = 1102472 : (315-109) + 98=1102472 :206 +98 = 11012 +98 = 110110=1101,7х +21 +3,1х = 571,7х + 3,1х = 57 - 214,8х = 36х= 36/4,8 = 360/48х=7,51,7 *7,5 +21 + 3,1 * 7,5 = 5712,75 +21 + 23,25 = 5736+21 = 5757=57условие некорректное :1 вариант.2х - (1/10 ) = 3/52х = 3/5 + 1/10 = 0,6+0,12х=0,7х=0,7/2 = 7/20х=0,352*0,35 - (1/10) = 3/50,7-0,1=3/56/10=3/53/5=3/52 вариант.(2х - 1) / 10 = 3/55(2х-1) = 3*1010х - 5 = 3010х = 30+510х = 35х=35/10х=3,5(2*3,5 -1) /10 = 3/56/10 = 3/53/5 = 3/5