(3⼀5十1⼀15)x30用简便方法计算

2025-04-11 06:59:07
推荐回答(1个)
回答1:

(3/5十1/15)x30【乘法分配律】
=3/5x30+1/15x30
=18+2
=20

答题不易,望采纳~~~~