In: Math
5. Use the Laws of Logarithms to combine the expression: 3 (log5 (x) + 3 log 5 (y)−4 log 5 (z) )

Applying logarithmic property 

Applying logarithmic property 

Applying logarithmic property 

Applying logarithmic property 

Therefore,
The combined logarithmic expression is,

Verification:
We can verify 
 by expanding the expression
Applying logarithmic property 

Applying logarithmic property 

Applying logarithmic property 

Applying logarithmic property 

Which is same as the expanded form.
Therefore,
The combined expression is,
