luas lahan peternakan = 3³/5+2½-1⅓

3 3/5 +2 1/2 - 1 1/3=
(3+2-1) + ( 3/5 + 1/2 - 1/3)
4 + (18/30 + 15/30 - 10/30)
4+ 33/30 = 4 + 1 1/10 = 5 1/10