0.125乘4分之3加8分之1乘8.25加12.5％
=0.125×(3/4+1+8.25)
=0.125×10
=1.25

不懂可追问,有帮助请采纳,谢谢!0.125×(3/4+1+8.25)1从哪里来？最后一个12.5%=0.125=0.125x18分之1去了哪里？1/8=0.125