Question

在5.5与他的倒数之间有a个整数,在5.5与他的相反数之间有b个整数,求（a+b）/(a-b)-5 的值

Answer 1

5.5的倒数是2/11,5.5的相反数是-5.5;

从2/11到5.5有1,2,3,4,5 ;a=5;

从-5.5到5.5有-5,-4,-3,-2,-1,0,1,2,3,4,5;b=11;

a+b=16;

a-b=-6;

(a+b)/(a-b)-5=-8/3-5=-23/3;