SOLUTION: solve 7^(6-x) * 5^(4-x) =3

Question 1084348: solve 7^(6-x) * 5^(4-x) =3
Answer by ikleyn(52865) (Show Source): You can put this solution on YOUR website!
.

Take log base 10 of both sides. You will get


     = ,   or

     = ,   or

     = .


Hence,  x = .

Now use your calculator.

On logarithms and their properties, see the lessons
    - WHAT IS the logarithm
    - Properties of the logarithm
    - Change of Base Formula for logarithms
    - Solving logarithmic equations
    - Using logarithms to solve real world problems
in this site.

Also, you have this free of charge online textbook in ALGEBRA-I in this site
    - ALGEBRA-I - YOUR ONLINE TEXTBOOK.

The referred lessons are the part of this online textbook under the topic "Logarithms".

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