Ответ: 200
0,27x + 0,3x + 86 = x
0,57x + 86 = x
0,57x - x = -86
-0,43x = -86
x = 86 : 0,43
x = 200
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Ответ: 200
0,27x + 0,3x + 86 = x
0,57x + 86 = x
0,57x - x = -86
-0,43x = -86
x = 86 : 0,43
x = 200