Question

十五分之八乘七分之一除四十五分之四简便运算

Answer 1

十五分之八乘七分之一除四十五分之四简便运算
8/15X1/7÷4/45
=8/15X1/7X45/4
=8/15X45/4X1/7
=2X3X1/7
=6/7

Answer 2

（8/15）X(1/7)/(4/45)
=(8/15)/(4/45)X(1/7)
=(8/15)X(45/4)X(1/7)
=(8X45)/(15X4)X(1/7)
=(4X2X15X3)/(15X4)X(1/7)
=6X(1/7)
=6/7