(-3)-5加4-(-7)-8等于?

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(-3)-5加4-(-7)-8等于?(-3)-5加4-(-7)-8等于?(-3)-5加4-(-7)-8等于?-5

(-3)-5加4-(-7)-8等于?
(-3)-5加4-(-7)-8等于?

(-3)-5加4-(-7)-8等于?
-5