2⼀3×括号4⼀5-1⼀3括住。怎么写?怎么计算?

2025-03-12 13:41:59
推荐回答(1个)
回答1:

2/3x(4/5-1/3)
=2/3x(12/15-5/15)
=2/3x7/15
=14/45