网址:http://m.1010jiajiao.com/timu3_id_667352[举报]
计算:
(1)(+14)+(-4)+(-2)+(+26)+(-3);
(2)(-83)+(+26)+(-41)+(+15);
(3)(-1.8)+(+0.7)+(-0.9)+1.3+(-0.2);
(4).