Like fractions are those fractions where denominators are same
Eg : 1/3, 2/3, 4/3, 8/3 are like fractions
2/9, 4/9, 6/9, 8/9 are like fractions
Unlike fractions are those fractions where denominators are different.
Eg : 1/2, 1/3, 1/5, 1/8 are unlike fractions