Question

Misalkan diberikan persamaan
3^x . 9^-y = 81^-1
2^x/ 2^y = 16

Answer 1

3^x.3^-2y=3^-4
x-2y=-4....(1)
2^x/2^y=16
2^x.2^-y=2^4
x-y=4
x=y+4...(2)
(1) x-2y=-4
y+4-2y=-4
-y=-8
y=8
x=y+4
=8+4
x=12
Hp{x,y}
{12,8}