问题 解答题

(4.5×2.8×8.5)÷(8.1×5.1×3.5).

答案

(4.5×2.8×8.5)÷(8.1×5.1×3.5),

=(5×0.9×0.4×7×17×0.5)÷(0.9×9×0.3×17×0.5×7)

=

5×0.9×0.4×7×17×0.5
0.9×9×0.3×17×0.5×7

=

2
2.7

=

20
27

问答题 简答题
问答题