作业帮计算7.6×199.9+4.3×199.9-19×19.99
来源：学生作业帮助网 编辑：作业帮 时间：2024/05/15 08:43:00
计算7.6×199.9+4.3×199.9-19×19.99
计算7.6×199.9+4.3×199.9-19×19.99
计算7.6×199.9+4.3×199.9-19×19.99
7.6×199.9+4.3×199.9-19×19.99
=7.6×199.9+4.3×199.9-1.9×199.9
=(7.6+4.3-1.9)×199.9
=10×199.9
=1999