Selesaikan 8^x = 2^y+1 dan 5^y = 25^x+1 ( tanda ^ adalah pangkat)

8^2x = 2^(y + 1)
2^(3 . 2x) = 2^(y + 1)
6x = y + 1
y = 6x - 1 ... (1)

5^y = 25^(x + 1)
5^y = 5^2(x + 1)
y = 2x + 2 ... (2)

y = y
6x - 1 = 2x + 2
6x - 2x = 1 + 2
4x = 3
x = 3/4

y = 2x + 2
y = 2 . 3/4 + 2
y = 7/2