SOLUTION: What is the value of x in the expression log (20-x) base 10=3 ?

Question 844458: What is the value of x in the expression log (20-x) base 10=3 ?
Found 2 solutions by fcabanski, lwsshak3:
Answer by fcabanski(1391) (Show Source): You can put this solution on YOUR website!
definition of logarithm: log(baseb) a = x -->

x = -980
Answer by lwsshak3(11628) (Show Source): You can put this solution on YOUR website!
What is the value of x in the expression log (20-x) base 10=3 ?
10^3=20-x (base(10) raised to log of number(3)=number(20-x))
x=20-1000
x=-980

RELATED QUESTIONS
The expression x= log base a. y means a^x. What is the value of log base... (answered by Alan3354)
What is the value of x log(base 3)x-log(base... (answered by lwsshak3)
What is the value of x in log base x (log base 2(log base 2(log base x 9) = 0? I need ur (answered by josmiceli)
What is the value 3+log(base)2 (x) = log(base 2)... (answered by lwsshak3)
what is the value of x in the logarithm... (answered by nerdybill)
If log(base 2) (1/4)=log(base 8) x, what is the value of x? (answered by Alan3354)
what is the value of x if... (answered by stanbon)
What is the smallest value that would be acceptable for "x" in this expression log(base... (answered by jim_thompson5910)
what is value of x: log(base s)x... (answered by Alan3354)