nomor 7 aja dong. pala saya mau pecah :'v. biasa masih newbie

7(8^p) = 9(5^q)
5^q = 7(8^p) / 9
5^q = (7 . 2^3p)/9

7(16^(p + 1)) = 12 (5^q)
7 . 2^4(p + 1) = 12 . (7 . 2^3p)/9 ====> kedua ruas kali 9
9 . 7 . 2^(4p + 4) = 12 . 7 . 2^3p ====> kedua ruas dibagi 7
9 . 2^4p . 2^4 = 12 . 2^3p
9 . 2^4p . 16 = 12 . 2^3p
144 . 2^4p = 12 . 2^3p
2^4p / 2^3p = 12 / 144
2^(4p - 3p) = 1/12
2^p = 1/12