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What is the solution to the equation 21^x-3=14? x=-2.133 x=-1.846 x=3.867 x=4.154

What is the solution to the equation 21^x-3=14? x=-2.133 x=-1.846 x=3.867 x=4.154
asked 152k views
4 votes
What is the solution to the equation 21^x-3=14?

x=-2.133
x=-1.846
x=3.867
x=4.154

asked
User Jonty Morris
by
8.1k points

2 Answers

6 votes
X-3= log 21(14)
X= log 21(14) /3
X= 3.86682
X= 3.867
answered
User Arie Xiao
by
8.9k points
2 votes

Answer:


3.866

Explanation:

The given equation can be solved by using the log function.


21^(x-3) = 14\\(x-3) log 21 = log 14\\x-3 = (log 14)/(log 21) \\x-3 = 0.866\\x = 3.866\\

answered
User Daydreaming Duck
by
7.5k points
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