1/2÷【0.75×(3/12+25%)】 简算

问题描述:

1/2÷【0.75×(3/12+25%)】 简算

1/2÷[0.75x(3/12+3/12)]
=1/2÷(0.75x1/2)
=1/2÷(3/4x1/2)
=1/2x8/3
=4/3