Solve the equation $\ln (7 x+5)=1$
The exact solution (using exponents) is $x=\frac{e-5}{7}$
The solution, rounded to 4 decimal places is $x=$
Final Answer: The solution to the equation \( \ln (7 x+5)=1 \), rounded to 4 decimal places, is \( x=\boxed{-0.326} \)
Step 1 :Solve the equation \( \ln (7 x+5)=1 \)
Step 2 :Use the property of logarithms that says the logarithm base e of a number is the exponent to which e must be raised to equal that number. Therefore, we can rewrite the equation as \( 7x + 5 = e^1 \)
Step 3 :Solve this equation for x to get the exact solution \( x=\frac{e-5}{7} \)
Step 4 :Calculate the value of e and perform the necessary operations to find the solution rounded to 4 decimal places, which is \( x = -0.325959738791565 \)
Step 5 :Round the solution to 4 decimal places to get \( x = -0.326 \)
Step 6 :Final Answer: The solution to the equation \( \ln (7 x+5)=1 \), rounded to 4 decimal places, is \( x=\boxed{-0.326} \)