简单的负数题 (-6)-(+5)+(-9)+(-4)-(-9)

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简单的负数题
(-6)-(+5)+(-9)+(-4)-(-9)

(-6)-(+5)+(-9)+(-4)-(-9)
=-6-5-9-4+9
=-15

答案 -33

(-6)-(+5)+(-9)+(-4)-(-9)
= -6-5-9-4+9
= -6-5-4+9-9
= -6-5-4
= -15