问题
解答题
计算: (1)2×(-3)3-4×(-3)+15; (2)-14-2×(-1)+
|
答案
(1)原式=2×(-27)-4×(-3)+15
=-54+12+15
=-27;
(2)原式=-1-2×(-1)+
×4×11 4
=-1+2+1
=2.
计算: (1)2×(-3)3-4×(-3)+15; (2)-14-2×(-1)+
|
(1)原式=2×(-27)-4×(-3)+15
=-54+12+15
=-27;
(2)原式=-1-2×(-1)+
×4×11 4
=-1+2+1
=2.