简便运算;27×(-2/3)+(-15)×2/3-9×2/3=
问题描述:
简便运算;27×(-2/3)+(-15)×2/3-9×2/3=
答
27×(-2/3)+(-15)×2/3-9×2/3
=-27×2/3-15×2/3-9×2/3
=(-27-15-9)×2/3
=-51×2/3
=-34
愿对你有所帮助!