0.125=1/8 3/4=0.75 12.5%=1/8 上式=1/8*(0,75+8,25+1)=10/8=5/4=1.25
解：原式=0.125x0.75+0.125x8.25+12.5%
=0.125x(0.75+8.25+1)
=0.125x10
=1.25
0.125乘以4分之3加上8分之1乘以8.25加上百分之12.5
=1/8x0.75+1/8x8.25+1/8
=1/8x(0.75+8.25+1)
=1/8x10
=1.25
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