有理数计算:(-20)-(+5)-(-5)-(-12)
问题描述:
有理数计算:(-20)-(+5)-(-5)-(-12)
答
-8
答
(-20)-(+5)-(-5)-(-12)
=-25+5+12
=-20+12
=-8
答
—8
答
-32
答
(-20)-(+5)-(-5)-(-12)
=-20-5+5+12
=12-20
=-8