Вправи 1051 - 1200 » 1060

Виконай дії. а) 15/12 + 211/12 = 316/12 = 3 + 14/12 = 41/3; б) 37/13 + 27/13 = 514/13 = 5 + 11/13 = 61/13; в) 44/15 + 713/15 = 1117/15 = 11 + 12/15 = 122/15; г) 8/9 + 7/9 = 15/9 = 16/9 = 12/3; ґ) 7/12 + 11/12 = 18/12 = 3/2 = 11/2; д) 8/15 + 11/15 = 19/15 = 14/15.