问题
解答题
计算: (1)-49-(-25)+(-24); (2)(-24)×(-
(3)16÷(-2)3-(-
(4)(8a-6b)-2(5b-4a)+3(3a-2b). |
答案
(1)原式=-49+25-24
=-48;
(2)原式=-24×(-
)-24×1 8
-24×(-1 3
)1 4
=3-8+6
=1;
(3)原式=16÷(-8)+
×161 8
=-2+2
=0;
(4)原式=8a-6b-10b+8a+9a-6b
=25a-22b.