Question

九分之四除以小括号里边六分之五减二分之一括起来乘小括号里边八分之七减去二分之一括起来

Answer 1

九分之四除以小括号里边六分之五减二分之一括起来乘小括号里边八分之七减去二分之一括起来

=(4/9)÷(5/6-1/2)*(7/8-1/2)

=(4/9)÷(5/6-3/6)*(7/8-4/8)

=(4/9)÷(2/6)*(3/8)

=(4/9)÷(1/3)*(3/8)

=(4/3)*(3/8)

=(4/8)

=1/2