Seven times the difference of a number and 7

7n-49

Step-by-step explanation:

Using the distributive property, you would do 7(n)+7(-7). 7(n)=7n and 7(-7)=-49 so the answer is 7n-49

take the logarithm of both sides (the base of the log doesn't matter):

apply the exponent property - this says that :

distribute the log terms on both sides:

group like terms together:

divide through both sides by the coefficient on :

you can do some additional rewriting here using the properties of the logarithm to simplify things if you like: