Question 263991
{{{log(2,(30))-log(2,(10))}}} Start with the given expression.



{{{log(2,(30/10))}}} Use the identity  {{{log(b,(x))-log(b,(y))=log(b,(x/y))}}} 



{{{log(2,(3))}}} Reduce.



So {{{log(2,(30))-log(2,(10))=log(2,(3))}}}