Номер 1061

Обчисли:

1) (8,23 + (–5,47)) + (–3,84) = (8,23 – 5,47) + (–3,84) = 2,76 + (–3,84) = –(3,84 – 2,76) = –1,08;

2) 4,47 + (–2,98 + 0,47) = 4,47 + (–(2,98 – 0,47)) = 4,47 + (–2,51) = 4,47 – 2,51 = 1,96.