-x+(2x-2)-(3x+5)得多少?
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-x+(2x-2)-(3x+5)得多少?
-x+(2x-2)-(3x+5)得多少?
-x+(2x-2)-(3x+5)得多少?
-x+(2x-2)-(3x+5)
=-x+2x-2-3x-5
=-x+2x-3x-2-5
=-2x-7
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