你要字的解题思路就是看一下二十四怎么会等于二十一般是四乘以六都有十四三乘以八等于二十四十二加十二的
7×(3÷7-(-3))=24
7×((3÷7)-(-3))=24
7×(3-(-3)÷7)=24
7×(3-((-3)÷7))=24
7×(3÷7-(-3))=24
7×((3÷7)-(-3))=24
7×(3-(-3)÷7)=24
7×(3-((-3)÷7))=24
(3÷7-(-3))×7=24
((3÷7)-(-3))×7=24
(3÷7-(-3))×7=24
((3÷7)-(-3))×7=24
(3-(-3)÷7)×7=24
(3-((-3)÷7))×7=24
(3-(-3)÷7)×7=24
(3-((-3)÷7))×7=24
((-3)-3/7)×(-7)=24
7*(3-(-3)/7)=24
7*(3-((-3)/7))=24
7*(3/7-(-3))=24
7*((3/7)-(-3))=24
(3/7-(-3))*7=24
((3/7)-(-3))*7=24
(3-(-3)/7)*7=24
(3-((-3)/7))*7=24
(3-(-3)/7)*7=24
(3-((-3)/7))*7=24
(3/7-(-3))*7=24
((3/7)-(-3))*7=24
7*(3/7-(-3))=24
7*((3/7)-(-3))=24
7*(3-(-3)/7)=24
7*(3-((-3)/7))=24