(-5/12)*8/15*1/2*(-2/3) 简便方法计算,脱式计算(“/”是分数线)
问题描述:
(-5/12)*8/15*1/2*(-2/3) 简便方法计算,脱式计算(“/”是分数线)
答
[(-5/12)*(-2/3)]*(8/15*1/2)
=5/18*4/15
=2/27