1 3/5+2 5/6 = виконати діі
1 3/5 + 2 5/6 = (5 + 3) / 5 + (2 * 6 + 5)/ 6 = 8 / 5 + 17 / 6 =
(8 * 6 + 17 * 5) / (5 * 6) = (48 + 85) / 30 = 133 / 30 = 4 13/30
1 3/5+2 5/6=(1+2)+(3\5+5\6)=3+(18\30+25\30)=3+(18+25)\30=
=3+43\30=3+1+13\30=4 13\ 30