13+(-1.25)-25+(-2.75-5)计算过程

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13+(-1.25)-25+(-2.75-5)计算过程13+(-1.25)-25+(-2.75-5)计算过程13+(-1.25)-25+(-2.75-5)计算过程=13-(1.25+2.75)-25-

13+(-1.25)-25+(-2.75-5)计算过程
13+(-1.25)-25+(-2.75-5)计算过程

13+(-1.25)-25+(-2.75-5)计算过程
=13-(1.25+2.75)-25-5
=13-4-30
=-21

=13-1.25-25-2.75-5
=13-(1.25+25+2.75+5)
=13-34
=-21