Solve this equation please...i want to get answer so please solve this question immidiatly. Please fast reply...

It is wrong as( 7^2)^-4 ×(7^4)^6/(7^2)^4=7^(-8+24-8) Which is equal to 7^8 which is not equal to 49 . If (7^4)^6 had been( 7^3)^6 then the answer would have been correct