十九分之六*七分之六+十九分之六/七,能简便简便计算
人气：146 ℃ 时间：2020-05-15 15:36:16
解答
=19分之7*7分之6+19分之7*7分之1
=19分之7*(7分之6+7分之1)
=19分之7*1
=19分之7
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