1/8*4/11+19/11*0.125-1/8
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1/8*4/11+19/11*0.125-1/81/8*4/11+19/11*0.125-1/81/8*4/11+19/11*0.125-1/8原式＝1／8×（4／11＋19／11－1）＝1／8×12
1/8*4/11+19/11*0.125-1/8
1/8*4/11+19/11*0.125-1/8
1/8*4/11+19/11*0.125-1/8
原式＝1／8×（4／11＋19／11－1）
＝1／8×12／11
＝3／22
1/8*4/11+19/11*0.125-1/8 全部展开 1/8*4/11+19/11*0.125-1/8 收起
=1/8*4/11+19/11*125/1000-1/8
=1/8*4/11+19/11*1/8-1/8
=1/8*(4/11+19/11-1)
=1/8*(4/11+19/11-11/11)
=1/8*(4+19-11)/11
=1/8*12/11
=3/22完整过程
=1/8*4/11+19/11*125/1000-1/8
=1/8*4/11+19/11*1/8-1/8
=1/8*(4/11+19/11-1)
=1/8*(4/11+19/11-11/11)
=1/8*(4+19-11)/11
=1/8*12/11
=3/22