Solving exponential equations

Hey I was wondering if you could help me find the answer to some practice questions we were given. I have a quiz tomorrow morning but I'm not even sure if I'm doing it right. Whats the point of practice questions if I don't even have the answers (Crying)

I'm asked to solve exponential equations here are two of the more difficult ones I'm not sure how to do:

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Could really use a small explanation, or just the steps alone so I can interpret it myself

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Re: Solving exponential equations