分数四则混合运算5/9X(9/5+18) 13/14-15/28÷5/8 (5/6-3/4)÷3/8 5/9X5/6+4/9÷6/54÷4/5-4/5÷4 7/11÷[2/5-(1-7/10)}

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分数四则混合运算5/9X(9/5+18) 13/14-15/28÷5/8 (5/6-3/4)÷3/8 5/9X5/6+4/9÷6/54÷4/5-4/5÷4 7/11÷[2/5-(1-7/10)}
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分数四则混合运算5/9X(9/5+18) 13/14-15/28÷5/8 (5/6-3/4)÷3/8 5/9X5/6+4/9÷6/54÷4/5-4/5÷4 7/11÷[2/5-(1-7/10)}
分数四则混合运算
5/9X(9/5+18) 13/14-15/28÷5/8 (5/6-3/4)÷3/8 5/9X5/6+4/9÷6/5
4÷4/5-4/5÷4 7/11÷[2/5-(1-7/10)}

分数四则混合运算5/9X(9/5+18) 13/14-15/28÷5/8 (5/6-3/4)÷3/8 5/9X5/6+4/9÷6/54÷4/5-4/5÷4 7/11÷[2/5-(1-7/10)}
1、5/9X(9/5+18) =5/9*9/5+5/9*18=1+10=11;
2、13/14-15/28÷5/8=13/14-15/28*8/5=13/14-12/14=25/14;
3、(5/6-3/4)÷3/8=(10/12-9/12)*8/3=1/12*8/3=8/36=2/9;
4、5/9X5/6+4/9÷6/5=(5/9+4/9)*5/6=5/6
5、4÷4/5-4/5÷4=4*5/4-4/5*1/4=5-1/5=24/5
6、7/11÷[2/5-(1-7/10)]=7/11÷(4/10-3/10)=7/11*10=70/11