11⼀12减5⼀7减1⼀12的差等于多少?用简便方法计算

2025-03-13 10:45:16
推荐回答(1个)
回答1:

11/12-5/7-1/12
=11/12-1/12-5/7
=5/6-5/7
=5(1/6-1/7)
=5/42