Question

方程题,帮帮忙啊~~(1)x/(x-2)+ x-9/(x-7)= x+1/(x-1) +x-8/(x-6)(2)x+2/

Answer 1

1.x/(x-2)=1+2/(x-2)x-9/(x-7)= 1-2/(x-7)x+1/(x-1)=1+2/(x-1)x-8/(x-6)=1-2/(x-6)代入得1/(x-2)-1/(x-7)=1/(x-1)-1/(x-6)移项得1/(x-2)+1/(x-6)=1/(x-1)+1/(x-7)然后通分就好算了,注意x不等于1,2,6,7(分母不为0),最...