(-9)-(-2)+(-7)-(+5)-(-4)写成省略加号形式到底该怎样写
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![(-9)-(-2)+(-7)-(+5)-(-4)写成省略加号形式到底该怎样写](/uploads/image/z/656616-48-6.jpg?t=%28-9%29-%28-2%29%2B%28-7%29-%28%2B5%29-%28-4%29%E5%86%99%E6%88%90%E7%9C%81%E7%95%A5%E5%8A%A0%E5%8F%B7%E5%BD%A2%E5%BC%8F%E5%88%B0%E5%BA%95%E8%AF%A5%E6%80%8E%E6%A0%B7%E5%86%99)
(-9)-(-2)+(-7)-(+5)-(-4)写成省略加号形式到底该怎样写
(-9)-(-2)+(-7)-(+5)-(-4)写成省略加号形式
到底该怎样写
(-9)-(-2)+(-7)-(+5)-(-4)写成省略加号形式到底该怎样写
(-9)-(-2)+(-7)-(+5)-(-4)
=-9+2-7-5+4
(-9)-(-2)-7-5-(-4)