The sum of the subtracted, the subtracted and the difference in a subtraction formula is 456, and the difference is three times of the subtraction______ .

The sum of the subtracted, the subtracted and the difference in a subtraction formula is 456, and the difference is three times of the subtraction______ .

456 △ 2 = 228, 228 × 14 = 57, 57 × 3 = 171, then the subtraction formula is: 228-57 = 171, so the answer is: 228-57 = 171