Вправи для повторення розділу 3 » 40
–31/3 + (–45/6) = –7(2 + 5)/6 = –81/6; –6,2 + (–44/5) = –6,2 + (–4,8) = –11; –21/3 + (–5,2) = –21/3 + (–51/5) = –7(5 + 3)/15 = –78/15; –7,39 + (–46/25) = –7,39 + (–4,24) = –11,63.
–31/3 + (–45/6) = –7(2 + 5)/6 = –81/6; –6,2 + (–44/5) = –6,2 + (–4,8) = –11; –21/3 + (–5,2) = –21/3 + (–51/5) = –7(5 + 3)/15 = –78/15; –7,39 + (–46/25) = –7,39 + (–4,24) = –11,63.