1.能用简便的要用简便方法计算 （1）7/9除1/3除14/9（2）18/35除0.6*2/3（3.）3/4*1/15+1/4除15
2.2007年,东莞市某楼盘七月份的房价是7000元/平方米,2008年二月份下降了1/5,二月份每平方米的房价是多少元?
人气：151 ℃ 时间：2019-09-04 04:21:27
解答
1(1)=7/9*9/14*3=3/2 (2)18/35*2/3*5/3=4/7 (3)=1/15*(3/4+1/4)=1/15
2 7000*(1-1/5)=5600
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