13/18除以(5/6+2/3乘3/8)

13/18除以(5/6+2/3乘3/8)
13/18除以(5/6+2/3乘3/8)

13/18除以(5/6+2/3乘3/8)
=13/18÷（5/6+16/9）
=13/18÷47/18
=13/47

13/18÷(5/6+2/3×3/8)=13/18÷(5/6+1/4)=13/18÷(10/12+3/12)
=13/18÷13/12=13/18×12/13=12/18=2/3

13/18÷(5/6+1/4)
=13/18÷13/12
=13/18x12/13
=2/3