简算下列各题：[(5/4-3/8)×5/26+1/8×5/26]÷2又4/13.

来源：学生作业学帮网编辑：学帮网时间：2024/05/27 08:53:52

：[(5/4-3/8)×5/26+1/8×5/26]÷2又4/13.
=[(5/4-3/8+1/8)×5/26]÷30/13.
=5/26 * 13/30
=1/12

[(5/4-3/8)×5/26+1/8×5/26]÷2又4/13
=(5/4-3/8+1/8)×5/26÷2又4/13
=(5/4-1/4)×5/26×13/29
=5/26×13/29
=5/58

[(5/4-3/8)×5/26+1/8×5/26]÷2又4/13.
=[(5/4-3/8+1/8)×5/26]÷30/13.
=5/26 * 13/30
=1/12

中括号里提5/26 结果为13/30