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I need help with this please

I need help with this please-example-1
User Okconfused
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1 Answer

3 votes

Answer:

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

User Ueli Hofstetter
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