（18.6-18.6*0.31）/0.69简算

Question

（18.6-18.6*0.31）/0.69 简算

Answer 1

（18.6-18.6*0.31）/0.69
= 18.6*(1- 0.31)/0.69
= 18.6* 0.69/0.69
=18.6