Exercise
$\log\left(x\right)-\log\left(7\right)=\log\left(3\right)$
Step-by-step Solution
Learn how to solve properties of logarithms problems step by step online. Solve the logarithmic equation log(x)-log(7)=log(3). The difference of two logarithms of equal base b is equal to the logarithm of the quotient: \log_b(x)-\log_b(y)=\log_b\left(\frac{x}{y}\right). For two logarithms of the same base to be equal, their arguments must be equal. In other words, if \log(a)=\log(b) then a must equal b. Multiply both sides of the equation by 7. Multiply 3 times 7.
Solve the logarithmic equation log(x)-log(7)=log(3)
Final answer to the exercise
$x=21$