Math Problem Statement

Solve: 10e^{2x-3}=15e^{5x-7}

Solution

To solve the equation 10e2x3=15e5x710e^{2x-3} = 15e^{5x-7}, follow these steps:

  1. Rewrite the equation to isolate the exponential terms: 10e2x315e5x7=1\frac{10e^{2x-3}}{15e^{5x-7}} = 1

  2. Simplify the fraction: 1015e2x3e5x7=1\frac{10}{15} \cdot \frac{e^{2x-3}}{e^{5x-7}} = 1 23e(2x3)(5x7)=1\frac{2}{3} \cdot e^{(2x-3) - (5x-7)} = 1

  3. Combine the exponents: e(2x3)(5x7)=e2x35x+7=e3x+4e^{(2x-3) - (5x-7)} = e^{2x-3 - 5x + 7} = e^{-3x + 4} 23e3x+4=1\frac{2}{3} \cdot e^{-3x + 4} = 1

  4. Isolate the exponential expression: e3x+4=32e^{-3x + 4} = \frac{3}{2}

  5. Take the natural logarithm (ln) of both sides to solve for xx: 3x+4=ln(32)-3x + 4 = \ln\left(\frac{3}{2}\right)

  6. Solve for xx: 3x=ln(32)4-3x = \ln\left(\frac{3}{2}\right) - 4 x=4ln(32)3x = \frac{4 - \ln\left(\frac{3}{2}\right)}{3}

Therefore, the solution to the equation 10e2x3=15e5x710e^{2x-3} = 15e^{5x-7} is: x=4ln(32)3x = \frac{4 - \ln\left(\frac{3}{2}\right)}{3}

Would you like any further details or have any questions?

Here are some questions you might want to ask next:

  1. How do you solve logarithmic equations?
  2. What are the properties of exponents?
  3. Can you explain the natural logarithm function?
  4. How do you solve quadratic equations?
  5. What is the derivative of an exponential function?

Tip: When solving exponential equations, taking the natural logarithm of both sides can often simplify the process and help isolate the variable.

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Math Problem Analysis

Mathematical Concepts

Exponential Functions
Logarithms

Formulas

Exponential equation solving
Natural logarithm properties

Theorems

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Suitable Grade Level

High School