4⼀9+2⼀3—1⼀9—1⼀3 等于多少?用简便方法运算

2024-12-04 12:15:20
推荐回答(2个)
回答1:

4/9+2/3-1/9-1/3
=(4/9-1/9)+(2/3-1/3)
=1/3+1/3
=2/3

回答2:

4/9+2/3—1/9—1/3
=4/9—1/9+2/3—1/3
=3/9+1/3
=2/3