Question

Find the exact solution to the equation.
6-log9(x+10) =5 need help :O

Answer 1

start with isolating log term

Answer 2

6-xlog9+10log9 =5?

Answer 3

http://www.wolframalpha.com/input/?i=6-log9%28x%2B10%29+%3D5

Answer 4

nope. there is no log property like that..
what i meant was :

6-log9(x+10) =5

subtract 6 both sides
=> -log9(x+10) = -1

multiply -1 both sides
=> log9(x+10) = 1

Answer 5

apply the rule :

\(\huge \log_a b = c => b = a^c\)

Answer 6

log9(x+10) = 1

=> x+10 = 9^1
=> x+ 10 = 9
x = ?

Answer 7

x=-1

Answer 8

oh wow i get it now thx bro :D