Question

I need help with this please

Answer 1

x=5

Explanation:

First, let's understand logarithms.

When there is no base given, like in this problem's right side of the equation, the base is automatically 10.

So, let's re-write that.

`(7)/(x+2)=log_(10)x+5`

Now, let's test a few of the numbers out. For brevity, I already know it's 3. Let's show you why.

`(7)/(5+2) =log_(10)(5+5)\\(7)/(7) = log_(10)(10)\\1 = 1`