la+3l+lb-2l=0,求a的b次幂

la+3l+lb-2l=0,求a的b次幂 若la-5l+lb+6l=0,求-b-a-(-2/3)的值 已知la-3l+lb-5l=0,求5a-2b的值? la+3l+lb-2l+c+1l=0求a+b+c 已知la-2l+lb-3l+lc-4l=0,求a+2b+3c的值 la-1/2l+lb-1/3l+lc-1/4l=0,求a+b+c的值. la-2l+lb-3l+lc-4l=0,求式子a+b+c的值. 若la-3l+lb-7l=0,求a+b+2000的值 la-1l+lb+3l=0求b-a-0.5的值 已知la-2l+lb-5l=0,求a和b的值. la-1l+lb-2l=0,求a+b的值 已知la-4l+lb-8l=0,求a+b/ab的值 已知a,b是有理数,la-5l+lb-3l=0,求ab/a-b的值 已知la-2l+lb+3l+lc-4l=0,求a+2lbl+3c的值? 已知la+5l+lb-2l=0,求a和b的值.要解题的全过程, la-2l=5,lb+1l=4 且ab＜0求a+b-ab的值 若la+2l+lb+3l=0,则3a+2b= 有理数a、b满足la+4l+lb-1l=0,求a+b的值