(1+0.8%)x+(1+1.1%)×(42-x)=(1+1%)×42_数学解答

(1+0.8%)x+(1+1.1%)×(42-x)=(1+1%)×42

人气：434 ℃　时间：2020-04-02 06:05:58

解答

(1+0.8%)x+(1+1.1%)×(42-x)=(1+1%)×42
1.008x+1.011*42-1.011x=1.01*42
-0.003x=-0.001*42
x=14