Question

How do you solve `log (9x + 7) = 3`?

Answer 1

`x = 331/3`.

Explanation:

`log(8x+7)=3.`
`10^(log_(10)(9x+7))=10^3`

`10^(log_10(a))=a`

So, 9x+7 = 1000.

x = 993/9=331/3#..,