++――+47+75++@+5¥+.
(-47.75)*2又9/5+(-35.25)*(-2又9/5)+10.5*(-7又9/4)请帮我解开,并把式子写出来...
(-47.75)*2又9/5+(-35.25)*(-2又9/5)+10.5*(-7又9/4)
请帮我解开,并把式子写出来 展开
请帮我解开,并把式子写出来 展开
展开全部
(-47.75)*2又9/5+(-35.25)*(-2又9/5)+10.5*(-7又9/4)
=(-191/4)×19/5+(-141/4)×(-19/5)+21/2×(-37/4)
=(-191/4)×19/5+141/4×19/5-777/8
=(-191/4+141/4)×19/5-777/8
=(-50/4)×19/5-777/8
=(-95/2)-777/8
=(-380-777)/8
=-1157/8
=-144右5/8
=(-191/4)×19/5+(-141/4)×(-19/5)+21/2×(-37/4)
=(-191/4)×19/5+141/4×19/5-777/8
=(-191/4+141/4)×19/5-777/8
=(-50/4)×19/5-777/8
=(-95/2)-777/8
=(-380-777)/8
=-1157/8
=-144右5/8
已赞过
已踩过<
评论
收起
你对这个回答的评价是?
推荐律师服务:
若未解决您的问题,请您详细描述您的问题,通过百度律临进行免费专业咨询