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4^(x+3) = 8^{1/4(x+5}
2^{2(x+3} = 2^{3(1/4x + 5/4)}
.
2(x+3) = 3(1/4x + 5/4)
2x + 6 = 3/4 x + 15/4
kalikan dengan 4
8x + 24 = 3x + 15
5x = -9
x = -9/5