脱式计算方法如下:0.125X2.75+1/8X4.25+12.5%=1/8X2.75+1/8X4.25+1/8=1/8X(2.75+4.25+1)=1/8x8=1
0.125X2.75+1/8X4.25+12.5%=1/8X2.75+1/8X4.25+1/8=1/8X(2.75+4.25+1)=1/8x8=1