Question

If a=b,show that abc=bac

Answer 1

Since a=b
Taking LHS,
Replace a with b, and b with a gives bac
=RHS
Hence proved abc=bac

OR
Let abc and bac are Three digit no.s..

So, abc = 100a + 10b + c
But since, a = b, 100a = 100b and,
----> 10b = 10a

=> abc = 100a + 10b + c = 100b + 10a +c = bac.....

Hence, abc = bac proved....
Hope this helps :)