Question

简便运算，怎么简便怎么算。求各为大神！

怎么减变就怎么运算 12分之5除以【【1+2分之1】除以2分之1】
↑ ↑
中括号 小括号

Answer 1

5/12除以[(1十1/2)除以1/2]
=5/12除以3
=5/12x1/3
=5/36
即36分之5

如有帮助，请采纳，谢谢！

Answer 2

5/12÷[(1+1/2)÷1/2]
=5/12÷[1×2+1/2×2]
=5/12÷3
=5/36

Answer 3

5/12除以(3/2除以1/2)
=5/12除以3
=5/36