Question

[(9/14*3.5+1/6)/(13又1/3-3又3/4/5/16)]/5又1/4*4/21=

Answer 1

【（9/14×3.5+1/6）÷（13 又3/1—3又3/4 ÷ 5/16）】÷5又1/4×4/21
=[(9/14×7/2+1/6)÷（13又1/3-15/4×16/5）]×4/21×4/21
=[(9/4+1/6)÷(13又1/3-12）]×4/21×4/21
=(29/12÷1又1/3)×4/21×4/21
=29/12×3/4×4/21×4/21
=29/441

Answer 2

[(9/14*3.5+1/6)/(13又1/3-3又3/4/5/16)]/5又1/4*4/21
=[(9/14*7/2+1/6)/(13又1/3-15/4/5/16)]/21/4*4/21
=(9/4+1/6)/(40/3-12)/1
=(25/12)/(4/3)
=25/16
=1又9/16

追问

不对。

追答

抱歉错了一个数
[(9/14*3.5+1/6)/(13又1/3-3又3/4/5/16)]/5又1/4*4/21
=[(9/14*7/2+1/6)/(13又1/3-15/4/5/16)]/21/4*4/21
=(9/4+1/6)/(40/3-12)/1
=(29/12)(4/3)
=29/16
=1又13/16