如题所述
ç»ä¹ ä¸(B级) (ä¸)计ç®é¢: (1)23+(-73) (2)(-84)+(-49) (3)7+(-2.04) (4)4.23+(-7.57) (5)(-7/3)+(-7/6) (6)9/4+(-3/2) (7)3.75+(2.25)+5/4 (8)-3.75+(+5/4)+(-1.5) (äº)ç¨ç®ä¾¿æ¹æ³è®¡ç®: (1)(-17/4)+(-10/3)+(+13/3)+(11/3) (2)(-1.8)+(+0.2)+(-1ã
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