4/1乘0.75-0.25乘3/8+25%乘1/8简便计算,要过程.
1/4×0.75-0.25×3/8+25%×1/8
=1/4×（0.75-3/8+1/8）
=1/4×1/2
=1/8那0.25和25％是干嘛的？0.25=1/425%=0.25=1/4