Question

solve the given equation
log5 (x+2) - log5 11= log5 121 ?

Answer 1

@jdoe0001

Answer 2

http://www.chilimath.com/algebra/advanced/log/images/rules%20of%20exponents.gif <--- use 2nd rule listed there
then simplify and cross multiply

Answer 3

can you show me @jdoe0001

Answer 4

well, let us try using the 2nd rule listed there on the left hand side.... what would that give you?

Answer 5

\(\bf log_5(x+2) - log_5(11)= log_5(121)\implies log_5\left(\cfrac{x+2}{11}\right)= log_5(121)
\\ \quad \\
\cfrac{x+2}{11}=121\)

Answer 6

so is that the answer @jdoe0001

Answer 7

you need to solve for "x"

Answer 8

how would we do that @jdoe0001

Answer 9

@jdoe0001 ??

Answer 10

http://www.youtube.com/watch?v=n3FbQGGKVfc <---- simplifying linear equations

Answer 11

@surjithayer ??

Answer 12

x+2=121*11=?
find x

Answer 13

now multiply: 121*11= x+2
1331= x+2
x= 1331-2 = 1329

Answer 14

are you sure this is correct @bmorse

Answer 15

hang on let me check...

Answer 16

Yes it is!!

Answer 17

thanks

Answer 18

you're welcome!