问题
解答题
计算 (1)-4-28-(-29)+(-24); (2)4×(-3)2-5×(-2)+6; (3)(
(4)-14-
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答案
(1)原式=-4-28+29-24
=-4-28-24+29
=--56+29
=-27;
(2)原式=4×9+5×2+6
=36+10+6
=52;
(3)原式=-
×42+1 6
×42-5 7
×422 3
=-7+30-28
=-5;
(4)原式=-1-
(3-9)1 6
=-1+1
=0.