计算(1)(-4)-(+8)-(-5)+(-9);(2)(-5)×(-7)-5×(-6)(3)(?9)÷32×23÷(?4)(4)(1?
计算(1)(-4)-(+8)-(-5)+(-9);(2)(-5)×(-7)-5×(-6)(3)(?9)÷32×23÷(?4)(4)(1?12?13)×(?12)(5)3+...
计算(1)(-4)-(+8)-(-5)+(-9);(2)(-5)×(-7)-5×(-6)(3)(?9)÷32×23÷(?4)(4)(1?12?13)×(?12)(5)3+50÷(?2)2×(?15)?1.
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