5 5/6 + 3 3/4 = 5 10/12 +3 9/12 = 8 19/12 = 9 7/12
5 7/9 -2 1/6 = 5 14/18 - 2 3/18 = 3 11/18 2 16 + 1 89 2 318 + 1 1618 ; 2 16 + 1 89 = 2 318 + 1 1618 = 2 + 1 + 318 + 1618 =
= 3 1918 = 3 2 16 – 1 89 = 2 318 – 1 1618 = 1 2118 – 1 1618+ 1 118 = 4 118 . 2 16 – 1 89 = 2 318 – 1 1618 = 1 2118 – 1 1618 =
= 1 – 1 + 2118 – 1618 = 518 .