问题
解答题
(1)计算:(1)(-2)+(+5)-(+4)-(-3)-3
(2)计算:-5×(-6)+3×(-8)-(-4)×(-7)
答案
(1)原式=-2+5-4+3-3
=-6+5+0
=-1;
(2)原式=30-24-28
=30-52
=-22.
(1)计算:(1)(-2)+(+5)-(+4)-(-3)-3
(2)计算:-5×(-6)+3×(-8)-(-4)×(-7)
(1)原式=-2+5-4+3-3
=-6+5+0
=-1;
(2)原式=30-24-28
=30-52
=-22.