(8-1又1/3-0.4)×(-3/4)
问题描述:
(8-1又1/3-0.4)×(-3/4)
答
(8-1又1/3-0.4)×(-3/4)
=(8-4/3-0.4)×(-3/4)
=-(120/15-20/15-6/15)×3/4
=-94/15×3/4
=-47/10
=-4.7