99999前面加减乘除怎么得17.18.19.20

99999前面加减乘除怎么得17.18.19.20
2025-01-03 23:02:19
推荐回答(4个)
回答1:

[9x9-9]/9+9=17
[9/9+9/9]x9=18
[9x9+9]/9+9=19
9+9+(9+9)/9=20

回答2:

(9×9-9)÷9+9=17
(9-9)×9+9+9=18
(9×9+9)÷9+9=19
(9+9)÷9+9+9=20

回答3:

9+9+(9-9)*9=18
(9*9-9)÷9+9=17
(9+9)/9+9+9=20
(9*9+9)÷9+9=19

回答4:

(9×9-9)÷9+9=17;
9+9+9×(9-9)=18
(9×9+9)÷9+9=19;
(9+9)÷9+9+9 =20。