-2,3,5,7做24点

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-2,3,5,7做24点-2,3,5,7做24点-2,3,5,7做24点3x5+7-(-2)=243×5+7-(-2)=24(-2)+3×7+5=24[(-2)+5]×7+3=247+5×3-(-2)

-2,3,5,7做24点
-2,3,5,7做24点

-2,3,5,7做24点
3x5+7-(-2)=24

3×5+7-(-2)=24

(-2)+3×7+5=24
[(-2)+5]×7+3=24
7+5×3-(-2)=24