18分之13×0.56+5.6%×18分之5的简算
问题描述：
18分之13×0.56+5.6%×18分之5的简算
答
13/18*0.56+5.6%*(5/18)
=(13*0.56+5*5.6%)/18
=0.56*(13+0.1*5)/18
=0.56*13.5/18
=0.56*3/4
=0.42