Номер 1068

1) (–4,17 + 3,92) + (6,42 + (–5,59)) = –0,25 + 0,83 = 0,58;

2) (4,48 + (–3,17)) + (–6,18 + 3,49) = 1,31 + (–2,69) = –1,38.