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简便计算题1/3+4/(3*5)+6/(3*5*7)+8/(3*5*7*9)+10/(3*5*7*9*11)+1/(3*

来源:学生作业帮 编辑:神马作文网作业帮 分类:数学作业 时间:2024/09/24 21:25:31
简便计算题1/3+4/(3*5)+6/(3*5*7)+8/(3*5*7*9)+10/(3*5*7*9*11)+1/(3*5*7*9*11)
简便计算题1/3+4/(3*5)+6/(3*5*7)+8/(3*5*7*9)+10/(3*5*7*9*11)+1/(3*
1/3+4/(3*5)+6/(3*5*7)+8/(3*5*7*9)+10/(3*5*7*9*11)+1/(3*5*7*9*11)
=1/3+4/(3*5)+6/(3*5*7)+8/(3*5*7*9)+1/(3*5*7*9*11)*(10+1)
=1/3+4/(3*5)+6/(3*5*7)+8/(3*5*7*9)+11/(3*5*7*9*11)
=1/3+4/(3*5)+6/(3*5*7)+8/(3*5*7*9)+1/(3*5*7*9)
=1/3+4/(3*5)+6/(3*5*7)+1/(3*5*7*9)*(8+1)
=1/3+4/(3*5)+6/(3*5*7)+9/(3*5*7*9)
=1/3+4/(3*5)+6/(3*5*7)+1/(3*5*7)
=1/3+4/(3*5)+1/(3*5*7)*(6+1)
=1/3+4/(3*5)+7/(3*5*7)
=1/3+4/(3*5)+1/(3*5)
=1/3+1/(3*5)*(4+1)
=1/3+1/(3*5)*5
=1/3+1/3
=2/3