13+(-1.25)-25+(-2.75-5)计算过程
问题描述:
13+(-1.25)-25+(-2.75-5)计算过程
答
=13-1.25-25-2.75-5
=13-(1.25+25+2.75+5)
=13-34
=-21
答
=13-(1.25+2.75)-25-5
=13-4-30
=-21