Question 1028235
I have no idea how to solve these. Please show your work. 
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They're not equations, so there's nothing to solve.
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1/2log3^81+log3^15
= log(3^(81/2) + log(3^15)
= log(3^(111/2))
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I doubt that's what you meant to post.
Is it supposed to be base 3?
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logb^m +logb^2-logb^x

3logb^x -(logb^4 + logb^X)

3logb^2 + logb^y-4logb^z