Question

1+1/2+1/3+1/4+1/5+1/6脱式计算

1+1/2+1/3+1/4+1/5+1/6脱式计算

Answer 1

原式
=1+(1/2+1/3+1/6)+(1/4+1/5)
=1+1+9/20
=2又9/20

Answer 2

1+1/2+1/3+1/4+1/5+1/6脱式计算
=1+30/60+20/60+15/60+12/60+10/60
=1+50/60+27/60+10/60
=1+87/60
=2又9/20

Answer 3

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