(1⼀4+1⼀5)x4x5 能简便计算吗? 过程

2025-04-13 09:37:22
推荐回答(3个)
回答1:

(1/4)×4×5+(1/5)×4×5 =5+4 =9.

回答2:

=1/4x4x5+1/5x4x5=5+4=9

回答3:

(1/4+1/5)x4x5 =1/4x4x5+1/5x4x5=5+4=9