(567+345*566)/(567*345+222)+(876*655-321)/(555+876*654)

问题描述:

(567+345*566)/(567*345+222)+(876*655-321)/(555+876*654)

= 1

567*345+222=(566+1)*345+222=566*345+345+222=566*345+567所以(567+345*566)/(567*345+222)=1同样655+876*654=655+876*(655-1)=876*655-321所以(876*655-321)/(555+876*654)=1所以=1+1=2