6.48÷[(1.4-0.8)x0.9]简便计算？

Question

如题所述

Answer 1

脱式计算
6.48÷[(1.4-0.8)x0.9]
=6.48÷（0.5x0.9）
=6.48÷0.9÷0.5
=7.2x2
=14.4

Answer 2

6.48÷[(1.4-0.8)×0.9]
=6.48÷[0.6×0.9]
=6.48÷0.6÷0.9
=10.8÷0.9
=12本回答被网友采纳