问题
解答题
计算:
(1)|-45|+(-71)+|-5|+(-9);
(2)(-53)+(+21)-(-69)-(+37).
答案
(1)原式=45-71+5-9
=-30;
(2)原式=-53+21+69-37
=0.
计算:
(1)|-45|+(-71)+|-5|+(-9);
(2)(-53)+(+21)-(-69)-(+37).
(1)原式=45-71+5-9
=-30;
(2)原式=-53+21+69-37
=0.