简便计算,一定要有简便的过程!1\4÷(2\3+1\2)x4\5(3\4-3\5)÷7\101-5\14÷5\7[8\15-(4\5-3\10)]x15\14

简便计算,一定要有简便的过程!1\4÷(2\3+1\2)x4\5(3\4-3\5)÷7\101-5\14÷5\7[8\15-(4\5-3\10)]x15\14
简便计算,一定要有简便的过程!
1\4÷(2\3+1\2)x4\5
(3\4-3\5)÷7\10
1-5\14÷5\7
[8\15-(4\5-3\10)]x15\14

简便计算,一定要有简便的过程!1\4÷(2\3+1\2)x4\5(3\4-3\5)÷7\101-5\14÷5\7[8\15-(4\5-3\10)]x15\14
(1/4÷1/2+1/4÷1/2)x4/5
=(1/4x3/2+1/4x2)x4/5
=3/8x4/5+1/2x4/5
=3/10+2/5
=7/10