(-24又35分之34)*2.5*(-8)简便计算
问题描述:
(-24又35分之34)*2.5*(-8)简便计算
答
=-(-25+1/35)*2.5*8
=-(-25+1/35)*20
=(25-1/35)*20
=25*20-(1/35)*20
=500-4/7
=499又3/7