1/6+1/66+1/176+1/336(简算)

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1/6+1/66+1/176+1/336(简算)1/6+1/66+1/176+1/336(简算)1/6+1/66+1/176+1/336(简算)1/6+1/66+1/176+1/336=11/66+1

1/6+1/66+1/176+1/336(简算)
1/6+1/66+1/176+1/336(简算)

1/6+1/66+1/176+1/336(简算)
1/6+1/66+1/176+1/336
=11/66+1/66+1/176+1/336
=12/66+1/176+1/336
=2/11+1/176+1/336
=32/176+1/176+1/336
=33/176+1/336
=3/16+1/336
=63/336+1/336
=64/336
=4/21

1/6+1/66+1/176+1/336
=(5/6+5/66+5/176+5/336)÷5
=(1-1/6+1/6-1/11+1/11-1/16+1/16-1/21)÷5
=(1-1/21)÷5
=20/21÷5
=4/21