Question #b1a93

1 Answer
Aug 11, 2016

x =56

Explanation:

log(x+4)-log6=1

First step. The terms must be all logs or all numbers.
Do something with the 1. We know 1 = log 10
(As no bases are shown, we assume they are 10.)

log(x+4)-log6=log 10

Second step
Write two log terms as one log term. single number/fraction)

If log terms are being added, then the numbers are being multiplied.
If log terms are being subtracted, then the numbers are being divided

log((x+4)/(6) ) = log10

Drop the logs on each side If log A = log B, then A = B

(x+4)/(6) = 10

Solve the equation

x+4 = 60
x =56

Substitute the answer into the original equation to check .

log56 - log6 =1