(-5.61)*20+50*(-5.61)-30*5.61简便运算
问题描述:
(-5.61)*20+50*(-5.61)-30*5.61简便运算
答
(-5.61)*(20+50+30)=(-5.61)*100=-561
(-5.61)*20+50*(-5.61)-30*5.61简便运算
(-5.61)*(20+50+30)=(-5.61)*100=-561