2007×13/27+2007×19/27-2007×5/27简便计算!
问题描述:
2007×13/27+2007×19/27-2007×5/27简便计算!
答
2007×13/27+2007×19/27-2007×5/27
=2007×(13/27+19/27-5/27)
=2007×27/27
-2007
答
=2007×(13/27+19/27-5/27)
=2007×1
=2007