1. (-2)(-10)+(-4)(-5) =
2. [(-15)+(-3)(+5)]/[(-4)(-3)] =
3. (+8)-(-4)(+3)/(+2)(-2) =
directed numbers(need the step
2012-09-15 3:36 am
回答 (1)
2012-09-15 4:24 am
✔ 最佳答案
你好等我幫下你啦
(1). (-2)(-10)+(-4)(-5) 『負負得正』
=20+20
=40
(2). (-15)+(-3)(5)/(-4)(-3)
=-15-15/12
=-30/12
=-2.5
(3). (8)-(-4)(3)/(2)(-2) 『負負得正』
=8-(-12)/-4
=20/-4
=-5
希望幫到你LA
收錄日期: 2021-04-13 18:58:37
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20120914000051KK00421