问题
解答题
计算: (1)12-(-18)+(-7)-15 (2)-12-[5-(-2)2]-(
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答案
(1)原式=12+18-7-15=30-22=8;
(2)原式=-1-(5-4)-
×(-4)=-1-1+1=-1.1 4
计算: (1)12-(-18)+(-7)-15 (2)-12-[5-(-2)2]-(
|
(1)原式=12+18-7-15=30-22=8;
(2)原式=-1-(5-4)-
×(-4)=-1-1+1=-1.1 4