来自穆运峰的问题
一根钢筋截去它的30%,还剩21米,如果截去它的5/7,还剩多少米?RT
一根钢筋截去它的30%,还剩21米,如果截去它的5/7,还剩多少米?
RT
1回答
2019-08-19 14:58
一根钢筋截去它的30%,还剩21米,如果截去它的5/7,还剩多少米?RT
一根钢筋截去它的30%,还剩21米,如果截去它的5/7,还剩多少米?
RT
21*%30*5/7