8又11/15÷[2又1/3+1又7/9×（4又3/4-1.15）]=?

8又11/15÷[2又1/3+1又7/9×（4又3/4-1.15）]=?
8又11/15÷[2又1/3+1又7/9×（4又3/4-1.15）]=?

8又11/15÷[2又1/3+1又7/9×（4又3/4-1.15）]=?
8又11/15÷[2又1/3+1又7/9×（4又3/4-1.15）]
=(131/15)÷[7/3+(16/9)×(19/4-23/20)]
=(131/15)÷[7/3+(16/9)×(72/20)]
=(131/15)÷(7/3+32/5)
=(131/15)÷(131/15)
=1

(131/15)/[7/3+16/9*(19/4-23/20)]=131/15*(5/32)=131/96


希望能帮助到你！

8又11/15÷[2又1/3+1又7/9×（4又3/4-1.15）]
=131/15÷[5/3+16/9×(4.75-1.15)]
=131/15÷(5/3+16/9×3.6)
=131/15÷(5/3+6.4)
=131/15÷(5/3+32/5)
=131/15÷(25/15+96/15)
=131/15÷121/15
=131/121

=131/15÷[7/3+16/9×（19/4-23/20）]
=131/15÷[7/3+16/9×（95/20-23/20）]
=131/15÷[7/3+16/9×72/20]
=131/15÷(7/3+32/15)
=131/15÷(35/15+32/15)
=131/15÷131/15
=1

1
8又11/15÷[2又1/3+1又7/9×（4又3/4-1.15）]
=131/15÷[7/3+16/9X18/5]
=131/15÷131/15=1