1.（27/4-19/5)÷4/5
=27/4×5/4-19/5×5/4
=135/16-19/4
=135/16-76/16
=59/16
2.（14/29*29+58/9*29)*5/4
=（14+58/9×29）×5/4
=14×5/4+58/9×29×5/4
=35/2+4205/18
=315/18+4205/18
=4520/18
=2260/9
此题（2）你检查一下你的题目是否正确?