414-135⼀9的简便计算

2025-03-24 20:04:25
推荐回答(2个)
回答1:

(414-135)/9 = 414/9-135/9 = 46-15 = 31

414-135/9 = 414-15 = 414-14-1 = 400-1 = 399

回答2:

=414-15
=399