3×(2⼀15+1⼀12)-2⼀5 3⼀4×5⼀7×4⼀3-1⼀2能简算的要简算

2025-02-24 14:04:49
推荐回答(1个)
回答1:

3x(2/15+1/12)-2/5
=3x2/15+3x1/12-2/5
=2/5-2/5+1/4
=0+1/4
=1/4