八年级数学竞赛培优讲义专题07分式化简求值答案

专题07分式的化简求值例11提示：a31186131aaa3例2A提示：k6a1a2a3a4a5a6=a1=8a2a3a4a5a6a7a75832，得k=1，又3aaa2a3a4211ka5a2a