2⼀3-(1⼀6+2⼀9×1.8)脱式计算

2025-04-05 07:03:38
推荐回答(1个)
回答1:

2/3-(1/6+2/9×1.8)
=2/3-(1/6+0.4)
=2/3-(5/30+12/30)
=20/30-17/30
=1/10