1/5×8+1/8×11+1/11×14+……1/92×95= 简便计算
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1/5×8+1/8×11+1/11×14+……1/92×95= 简便计算
1/5×8+1/8×11+1/11×14+……1/92×95= 简便计算
1/5×8+1/8×11+1/11×14+……1/92×95= 简便计算
=(1/5-1/8)/3+(1/8-1/11)+…(1/92-1/95)/3
=(1/5-1/95)/3
=6/95