1/27+404/2727+131313/272727 简便计算

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1/27+404/2727+131313/272727简便计算1/27+404/2727+131313/272727简便计算1/27+404/2727+131313/272727简便计算1/27+40

1/27+404/2727+131313/272727 简便计算
1/27+404/2727+131313/272727 简便计算

1/27+404/2727+131313/272727 简便计算
1/27+404/2727+131313/272727 简便计算 求助,快!
1/27+404/2727+131313/272727
=1/27+4*101/2727+13*10101/272727
=1/27+4/27+13/27
=2/3

1/27+404/101*1/27+131313/10101*1/27