-13x2⼀3-0.34x2⼀7+1⼀3x(-13)-5⼀7x0.34

2025-05-09 01:57:33
推荐回答(1个)
回答1:

=-13×(2/3+1/3)-0.34×(2/7+5/7)
=-13×1-0.34×1
=-13-0.34
=-13.34