Jawabanmu

2014-08-28T07:23:39+07:00
8^{2x+3} = 2^{5x-1} = 2^{2(2x+3)} = 2^{5x-1}
2(2x+3) = 5x - 1
4x + 6 = 5x - 1
-x = -7
x = 7


9^{2x-6} = 3.3.9^{x+2}
9^{2x-6} = 9.9^{x+2}
9^{2x-6} = 9^{1}.9^{x+2}
9^{2x-6} = 9^{(x+2)+1}
2x-6 = x+2+1
2x - x = 6+3
x = 9

no. 3 gk jels tulisannya