Номер 1027

Заповни в зошиті таблицю:

–4,7 + (–3,92) = –(4,7 + 3,9) = –8,6;

–1 1/8 + (–7) = –(1 1/8 + 7) = –8 1/8;

–3/4 + (– 5/6) = –(9/12 + 10/12) = –19/12 = –1 7/12;

–8/9 + (–5/9) = –(8/9 + 5/9) = –13/9 = 1 4/9;

–5/8 + (–11/12) = –(15/24 + 22/24) = –37/24 = –11 3/24;

–17/27 + (–2/3) = –(17/27 + 2/3) = –(17/27 + 18/27) = –35/27 = –1 8/27.