Question

How do you solve `log_3 3+log_3x=5`?

Answer 1

`x=81`

Explanation:

You can see straightaway that `log_3 3 = 1`, because `3^1=3`, so

`1+log_3 x=5`
`log_3 x=4`

Raise both sides by `3`,

`3^(log_3 x)=3^4`
`x=3^4`
`x=81`