3 * 2^{1 - x} = 1/2 * 5^{2x - 1}
3 = 1/2 * 5^{2x - 1} * 2^{x - 1}
3 = 5^{2x - 1} * 2^{x - 2}
5^{2x - 1} * 2^{x - 2} = 3
eln(5)*(2x - 1) * eln(2)*(x - 2) = 3
eln(5)*(2x - 1) + ln(2)*(x - 2) = 3
ln(5)*(2x - 1) + ln(2)*(x - 2) = ln(3)
x*(2*ln(5) + ln(2)) - ln(5) - 2*ln(2) = ln(3)
x*(2*ln(5) + ln(2)) = ln(3) + ln(5) + 2*ln(2)
x*ln(50) = ln(60)
x = ln(60) / ln(50)