Ответ: 1/3x+0,5x=6 2/3, 2/6х+3/6х=6 2/3,5/6х = 6 2/3,х=6 2/3:5/6,х=8._______________1/3 × 8 + 0,5 ×8= 6 2/36 2/3 =6 2/3