Question 872426
5^t-1 • 3^2t = 4^t+3
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Use parentheses to clarify.  They're free.
If you mean:
5^(t-1) • 3^(2t) = 4^(t+3)
(t-1)*log(5) + 2t*log(3) = (t+3)log(4)
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Also, say what you want to do.
Probably solve for t.