Question

4/5×4/7×5/12等于多少？e

Answer 1

这个题目可以这样算，我们根据四则运算的规则，调整一下顺序就可以算起来方便很多。
4/5×4/7×5/12
=4/5×5/12×4/7（约分）
=1/3×4/7
=4/21

Answer 2

4/5×4/7×5/12
=4/5×5/12×4/7
=1/3×4/7
=4/21

Answer 3

4/5x4/7x5/12
=5/5x4/7x4/12
=1x4/7x1/3
=4/21