solving log base 10 problems?
I have a hard time solving the following problems, could someone help out please?
1. log10(x+6) - log10(x-3) = 1
2. log10(x-1) - log10(x+1) = 1
I have a hard time solving the following problems, could someone help out please?
1. log10(x+6) - log10(x-3) = 1
2. log10(x-1) - log10(x+1) = 1
Anonymous
Favorite Answer
1. glad I double check - SORRY
log (x+6)/(x-3) = 1
raise to 10th
(x+6)/(x-3) = 10^1 = 10
x+6 = 10x -30
9x = 36
x=4
---------
2.
almost same math
x-1 = 10(x+1)
x-1 = 10x +10
9x = -11
x = -11/9