SOLUTION: 3+ Log(2x+5)= 2 I have tried this problem and I am not coming up with the correct answer...can you please guide me?

Algebra ->  Exponential-and-logarithmic-functions -> SOLUTION: 3+ Log(2x+5)= 2 I have tried this problem and I am not coming up with the correct answer...can you please guide me?      Log On


   

Question 166732: 3+ Log(2x+5)= 2
I have tried this problem and I am not coming up with the correct answer...can you please guide me?
Found 2 solutions by nerdybill, vleith:
Answer by nerdybill(7384) About Me  (Show Source):
You can put this solution on YOUR website!
3+ Log(2x+5)= 2
Log(2x+5)= -1
2x+5= 10^-1
2x+5= 1/10
20x+50= 1
20x= -49
x = -49/20
x = -2.45


Answer by vleith(2983) About Me  (Show Source):
You can put this solution on YOUR website!
3%2B+Log%282x%2B5%29=+2
Log%282x%2B5%29=+-1
10%5E%28Log%282x%2B5%29%29+=+10%5E%28-1%29
2x+%2B+5+=+0.1
2x+=+-4.9
x+=+-2.45
Check you answer