因為,2.57,7的循環(huán) = 2.57+7/900 ,
(2.57+7/900)a-2.57a = 0.7 ,
(7/900)a = 0.7 ,
a = 90 ,
所以,2.57,7的循環(huán)乘以a = (2.57+7/900)a = 232 .
2.57,7的循環(huán)乘以a減去2.57a等于0.7.求2.57,7的循環(huán)乘以a等于多少
2.57,7的循環(huán)乘以a減去2.57a等于0.7.求2.57,7的循環(huán)乘以a等于多少
數(shù)學(xué)人氣：487 ℃時間：2020-07-21 21:03:59
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