计算:(1)(-49)-(+91)-(-5)+(-9);(2)(-3)2-23÷13×3(3)(-5)×(-7)-5×(-6)(4)
计算:(1)(-49)-(+91)-(-5)+(-9);(2)(-3)2-23÷13×3(3)(-5)×(-7)-5×(-6)(4)(-5)×6+(-125)÷(-5)...
计算:(1)(-49)-(+91)-(-5)+(-9);(2)(-3)2-23÷13×3(3)(-5)×(-7)-5×(-6)(4)(-5)×6+(-125)÷(-5)
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