Сложение смешаных чисел
1) 5 19/34 + 80 1/2 2)6 3/35 + 3 59/70 3) 47 211/360 + 82 83/180 4) 92 19/240 + 5 109/120

1)=5 19/34+80 17/34=85 36/34==86 1/172)=6 6/70+3 59/70=9 65/70==9 13/143)=47 211/360+82 166/360==129 377/360=130 17/3604)=92 19/240+5 218/240==97 237/240