6/7-5/8+1/8+1/14+1/14简算

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6/7-5/8+1/8+1/14+1/14简算

6/7-5/8+1/8+1/14+1/14简算
6/7-5/8+1/8+1/14+1/14简算

6/7-5/8+1/8+1/14+1/14简算
6/7-5/8+1/8+1/14+1/14
=6/7-(5/8+1/8)+1/14×2
=6/7+1/7-4/8
=1-1/2
=1/2

6/7-5/8+1/8+1/14+1/14
=6/7+1/7-(5/8-1/8)
=1-1/2
=1/2

6/7-5/8+1/8+1/14+1/14
=6/7-5/8+1/8+1/7
=(6/7+1/7)-(5/8-1/8)
=1-1/2
=1/2

6/7-5/8+1/8+1/14+1/14
= 12/14+1/14+1/14 -5/8+1/8
= 14/14 - 4/8
= 1 - 1/2
= 1/2

6/7-5/8+1/8+1/14+1/14
=6/7-(5/8-1/8)+1/14×2
=6/7+1/7-4/8
=1-1/2
=1/2