you need to know natural logarithms
3e to the 2x-1 power = 8
(2x-1) ln e = ln (8/3)
ln e = 1
(2x-1) = ln(8/3) = 0.98
2x = 1.98
x = 0.99
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E equals whatever you need it to to fit the equation.... for instance....3E=9....9/3=E.....E=3.. I'm only 12 so don't make fun of my answer..
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72(d^3)(e^2)72 is the LCM of 24 and 36.d^3 is the LCM of d and d^3.e^2 is the LCM of e^2 and e.
Let's represent Elga's age as x. Since Alvin's age is three times Elga's age, we can represent Alvin's age as 3x. The sum of their ages is 76, so we can create an equation: x + 3x = 76. Combining like terms, we get 4x = 76. Dividing both sides by 4, we find x = 19. Therefore, Elga's age is 19 years old.