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Logarithm

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Fill in the missing values that make the equations below true:

log (base 7) 8 + log (base 7) 9 = log (base 7) ?

log (base 2) 3 - log (base 2) ? = log (base 2) 3/5

2log (base 3) 5 = log (base 3) ?

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Solution:
Using the law of addition of logarithms, we have:
log (base 7) 8 + log (base 7) 9 = ...

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