acertain number when divided by 7 and 9 leaves 5 and 3 respectively as remainders. find the remainder obtained when it is divided by 63

12 is the remainder.When 12 gets divided by 7 remainder is 5 and when 12 gets divided by 9 remainder is 3 ;as it gave in question. So,when 12 gets divided by 63 remainder is 12 . This can also done by assuming 2 variables and making two eq. And solving both.