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標題:
PLEASE SLOVE THIS STEP BY STEP :2d=3(1-d)-(d+1)?
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更新: PLEASE SLOVE THIS STEP BY STEP : 2d=3(1-d)-(d+1)
最佳解答:
2d = 3 (1 - d) - (d + 1) 2d = 3 - 3d - d - 1 2d = 3 - 1 - 3d - d 2d = 2 - 4d 2d + 4d = 2 - 4d + 4d 6d = 2 6d / 6 = 2/6 d = 1/3
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