123+123123+123123123 / 234+234234+234234234的简便算法

问题描述:

123+123123+123123123 / 234+234234+234234234的简便算法

答案41/78.

(123+123123+123123123)/[2(123+123123+123123123)]=0.5

123*3+123*2*1000+123*1000000=123*(3+2000+1000000)=123*1002003=123246369同理得234+234234+234234234=234*1002003=234468702如果是(123+123123+123123123)/(234+234234+234234234)可以根据上面得出等于123*1002...