Question

1/3 in 1/5 in and 1/4 added is

Answer 1

you have to make common denominators , then you add

Answer 2

take the L.C.M of the denominators of the 3 fractions...here, the L.C.M. of 3, 5 and 4 is 60...then, u make all the denominators 60 and so multily the numerators with the required number...for instance in 1/3, 1 is multiplied by 20, since 20 multiplied by 3 gives you 60...do the same for the rest of them and add all the numerators...