0.92(a+10)*0.01=1+0.01a-1+0.080.0092a+0.092=0.01a+0.080.0008a=0.012a=15只要一步一步认真的化简就好了
(1-8%)(a+10)%=1+a%-92%92%*(a+10)%=8%+a%92%(a+10)%=(8+a)%92%(a+10)=8+a92%a+92%*10=8+a920%-800%=a-92%a120%=8%aa=15