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.

单项选择题
问答题